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102. Perionyx kempi Stephenson, 1914 Perionyx kempi Stephenson, 1914a: 389. T. Kobo in Abor Hills, Arunachal Pradesh, India. D. Arunachal Pradesh: Doju Bung (Julka 1981), Zero Camp Namdapha (Halder et al. 2007)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 293, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1914 a) Zoological results of the Abor Expedition, 1911 - 1912. Oligochaeta. Records of the Indian Museum, 8, 365 - 410. https: // doi. org / 10.5962 / bhl. part. 1193","Julka, J. M. (1981) Taxonomic studies on the earthworms collected during the Subansiri Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, Miscellaneous Publication, Occasional Paper, No. 26, 1 - 53.","Halder, K. R., Dhani, S. & Mandal, C. K. (2007) On some earthworms present in unnamed collections of Zoological Survey of India. Records of the Zoological Survey of India, 107, 79 - 93."]}

103. Perionyx koboensis Stephenson, 1914 Perionyx koboensis Stephenson, 1914a: 391. T. Kobo in Abor Hills, Arunachal Pradesh, India. D. Arunachal Pradesh . R. The species is doubtfully considered as junior synonym of Perionyx excavatus (see Blakemore 2010: 267)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 293, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1914 a) Zoological results of the Abor Expedition, 1911 - 1912. Oligochaeta. Records of the Indian Museum, 8, 365 - 410. https: // doi. org / 10.5962 / bhl. part. 1193","Blakemore, R. J. (2010) Cosmopolitan Earthworms-an Eco-Taxonomic Guide to the Peregrine Species of the World. 4 th Edition. VermEcology So (i) lutions, Yokohama, 850 pp., 350 figs., Internet links. [December 2010]"]}

119. Perionyx variegatus (Michaelsen, 1907) Perionychella variegata Michaelsen, 1907: 158. T. Phallut, district Darjeeling, West Bengal, India. D. Arunachal Pradesh: Sinkie River near Police Colony Itanagar (Halder et al. 2007). Sikkim : Nathang (Soota & Halder 1981). West Bengal ., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 295, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Michaelsen, W. (1907) Neue Oligochaeten von Vorder-Indien, Ceylon, Birma, und den Andaman-Inseln. Jahrbuch der Hamburgischen Wissenschaftlichen Anstalten, Hamburg, 24 (2), 143 - 188.","Halder, K. R., Dhani, S. & Mandal, C. K. (2007) On some earthworms present in unnamed collections of Zoological Survey of India. Records of the Zoological Survey of India, 107, 79 - 93.","Soota, T. D. & Halder, K. R. (1981) On some earthworms from eastern Himalayas. Records of the Zoological Survey of India, 79, 231 - 234."]}

100. Perionyx inornatus Stephenson, 1916 Perionyx inornatus Stephenson, 1916: 320. T. Sandakphu, district Darjeeling, West Bengal, India. D. West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 293, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1916) On a collection of Oligochaeta belonging to the Indian Museum. Records of the Indian Museum, 12, 299 - 354."]}

108. Perionyx pincernus Stephenson, 1916 Perionyx pincerna Stephenson, 1916: 319. Perionyx pincernus Stephenson. Blakemore 2007: 47. T. Near Ghoom, district Darjeeling, West Bengal, India. D. West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 294, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1916) On a collection of Oligochaeta belonging to the Indian Museum. Records of the Indian Museum, 12, 299 - 354.","Blakemore, R. J. (2007) Checklist of 505 earthworms species from India, Sri Lanka and the adjacent regions (excluding Myanmar) compiled from various sources [e. g. Stephenson (1923), Gates (1972), Julka (1988) etc.]. In: Blakemore, R. J. (Ed.), A series of searchable texts on earthworm biodiversity, ecology and systematic from various regions of the world. 3 rd Edition. Available from: http: // www. annelida. net / earthworm (accessed 1 March 2020)"]}

113. Perionyx rufulus Gates, 1945 Perionyx rufulus Gates, 1945: 74. T. Khezhabama, Nagaland, India. D. Nagaland., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 294, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Gates, G. E. (1945) On some Indian earthworms. II. Journal of the Royal Asiatic Society of Bengal, 11, 54 - 91."]}

114. Perionyx setnai Stephenson, 1931 Perionyx setnai Stephenson, 1931a: 63. T. Darjeeling, West Bengal, India. D. West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 294, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1931 a) Oligochaeta from Burma, Kenya and other parts of the world. Proceedings of the Zoological Society of London, 1931, 33 - 92."]}

104. Perionyx macintoshi Beddard, 1883 Perionyx ���m���intoshii ��� Beddard, 1883: 217. ? Lampito dubius Stephenson, 1916: 315. ? Megascolex dubius (Stephenson). Stephenson 1923: 240. Perionyx macintoshi Beddard. Gates 1972: 144 (for complete synonymy). T. Akyab, Myanmar. D. Arunachal Pradesh: Yame (Julka 1981), Pabin (Julka 1981), Damin (Julka 1981), Vidak (Julka 1981), ca. 7.5 km S of Mursing village (Julka & Halder 1975). Meghalaya: Dumpep (Gates 1952), Cantonment Hill Cherrapunji (Stephenson 1924b), Cherrapunji (Michaelsen 1910), Mawsmai Cave Cherrapunji (Halder 1999b). Mizoram: Pachhunga University College Aizawl (Lalthanzara & Ramanujam 2014), unspecified localities (Lalthanzara et al. 2011; Ramanujam et al. 2004). Tripura: Unspecified localities (Chaudhuri et al. 2012). West Bengal: ? Kurseong (Stephenson 1916), near Goomti Rest House Mahanadi (Julka 1975)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 293, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Beddard, F. E. (1883) Note on some earthworms from India. Annals and Magazine of Natural History, Series 6, 12 (70), 213 - 224. https: // doi. org / 10.1080 / 00222938309459619","Stephenson, J. (1916) On a collection of Oligochaeta belonging to the Indian Museum. Records of the Indian Museum, 12, 299 - 354.","Stephenson, J. (1923) Oligochaeta. The Fauna of British India, including Ceylon and Burma, Taylor and Francis, London, 518 pp.","Gates, G. E. (1972) Burmese earthworms. An introduction to the systematics and biology of megadrile oligochaetes with special reference to southeast Asia. Transactions of the American Philosophical Society, 62 (7), 1 - 326. https: // doi. org / 10.2307 / 1006214","Julka, J. M. (1981) Taxonomic studies on the earthworms collected during the Subansiri Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, Miscellaneous Publication, Occasional Paper, No. 26, 1 - 53.","Julka, J. M. & Halder, K. R. (1975) On the occurrence of the giant earthworm, Perionyx macintoshi Beddard, in Bhutan and Arunachal Pradesh (India). Proceedings of the Zoological Society of Calcutta, 28, 15 - 17.","Gates, G. E. (1952) On some earthworms from Burma. American Museum Novitates, No. 1555, 1 - 13.","Stephenson, J. (1924 b) On some Indian Oligochaeta, with a description of two new genera of Ocnerodrilinae. Records of the Indian Museum, 26, 317 - 365.","Michaelsen, W. (1910) Die Oligochatenfauna der vorderindisch-ceylonischen Region. Abhandlungen aus dem Gebiete der Naturwissenschaften, herausgegeben vom Naturwissenschaftlichen Verein in Hamburg, 19 (5), 1 - 108.","Halder, K. R. (1999 b) Oligochaeta: Earthworm. In: State Fauna. Series 4. Fauna of Meghalaya. Part 9. Zoological Survey of India, Calcutta, pp. 393 - 439.","Lalthanzara, H. & Ramanujam, S. N. (2014) Earthworm cast production and physico-chemical properties in two agroforestry systems of Mizoram (India). Tropical Ecology, 55, 77 - 86.","Lalthanzara, H., Ramanujam, S. N. & Jha, L. K. (2011) Population dynamics of earthworms in relation to soil physico-chemical parameters in agroforestry systems of Mizoram, India. Journal of Environmental Biology, 32, 599 - 605.","Ramanujam, S. N., Lalthanzara, H. & Jha, L. K. (2004) Biodiversity of earthworms in Mizoram. Journal of Nature Conservators, 16, 129 - 134.","Chaudhuri, P. S., Dey, A., Bhattacharjee, G. & Nath, S. (2012) Earthworm diversity in Tripura - present status. Science & Culture, 78 (7 - 8), 343 - 346."]}

89. Perionyx annulatus Stephenson, 1914 Perionyx annulatus Stephenson, 1914a: 386. T. South of Yembung and Rotung in Abor Hills, Arunachal Pradesh, India. D. Arunachal Pradesh., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 292, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1914 a) Zoological results of the Abor Expedition, 1911 - 1912. Oligochaeta. Records of the Indian Museum, 8, 365 - 410. https: // doi. org / 10.5962 / bhl. part. 1193"]}

91. Perionyx daminensis Julka, 1981 Perionyx daminensis Julka, 1981: 20. T. Damin, district Subansiri, Arunachal Pradesh, India. D. Arunachal Pradesh., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 292, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Julka, J. M. (1981) Taxonomic studies on the earthworms collected during the Subansiri Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, Miscellaneous Publication, Occasional Paper, No. 26, 1 - 53."]}

110. Perionyx pokhrianus affinis Stephenson, 1920 Perionyx pokhrianus var. affinis Stephenson, 1920: 210. Perionyx pokhrianus affinis Stephenson. Blakemore 2007: 47. T. Sitong Ridge, Jorpokhri, district Darjeeling, West Bengal, India. D. West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 294, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1920) On a collection of Oligochaeta from the lesser known parts of India and from eastern Persia. Memoirs of the Indian Museum, 7, 191 - 261.","Blakemore, R. J. (2007) Checklist of 505 earthworms species from India, Sri Lanka and the adjacent regions (excluding Myanmar) compiled from various sources [e. g. Stephenson (1923), Gates (1972), Julka (1988) etc.]. In: Blakemore, R. J. (Ed.), A series of searchable texts on earthworm biodiversity, ecology and systematic from various regions of the world. 3 rd Edition. Available from: http: // www. annelida. net / earthworm (accessed 1 March 2020)"]}

117. Perionyx sikkimensis michaelseni Stephenson, 1923 Perionyx sikkimensis var. michaelseni Stephenson, 1923: 359. Perionyx sikkimensis (Michaelsen). Michaelsen 1910 (in part): 60. T. Gangtok, Sikkim, India. D. Sikkim., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 295, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1923) Oligochaeta. The Fauna of British India, including Ceylon and Burma, Taylor and Francis, London, 518 pp.","Michaelsen, W. (1910) Die Oligochatenfauna der vorderindisch-ceylonischen Region. Abhandlungen aus dem Gebiete der Naturwissenschaften, herausgegeben vom Naturwissenschaftlichen Verein in Hamburg, 19 (5), 1 - 108."]}

107. Perionyx pallidus Stephenson, 1917 Perionyx pallidus Stephenson, 1917: 376. T. Kalimpong, district Kalimpong, West Bengal, India. D. West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 294, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1917) On a collection of Oligochaeta from various parts of India and further India. Records of the Indian Museum, 13, 353 - 416. https: // doi. org / 10.5962 / bhl. part. 5865"]}

95. Perionyx foveatus Stephenson, 1914 Perionyx foveatus Stephenson, 1914a: 396. T. Renging, Rotung and upper Rotung in Abor Hills, Arunachal Pradesh, India. D. Arunachal Pradesh. Meghalaya: Nonglang village (Kharkongor 2018)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 293, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1914 a) Zoological results of the Abor Expedition, 1911 - 1912. Oligochaeta. Records of the Indian Museum, 8, 365 - 410. https: // doi. org / 10.5962 / bhl. part. 1193","Kharkongor, I. J. (2018) Taxonomic and ecological studies on the earthworms (Annelida: Oligochaeta) of West Khasi Hills District, Meghalaya. Records of the Zoological Survey of India, 118, 56 - 74. https: // doi. org / 10.26515 / rzsi / v 118 / i 1 / 2018 / 123034"]}

118. Perionyx turaensis Stephenson, 1920 Perionyx turaensis Stephenson, 1920: 216. T. Tura, Garo Hills, Meghalaya, India. D. Arunachal Pradesh: 79 Mile Camp on Miao-Vijaynagar Road (Halder et al. 2007). Meghalaya: Malki (Halder 1999b). R. The species is possibly a synonym of Perionyx excavatus (Gates 1972: 147; Blakemore 2010: 267)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 295, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1920) On a collection of Oligochaeta from the lesser known parts of India and from eastern Persia. Memoirs of the Indian Museum, 7, 191 - 261.","Halder, K. R., Dhani, S. & Mandal, C. K. (2007) On some earthworms present in unnamed collections of Zoological Survey of India. Records of the Zoological Survey of India, 107, 79 - 93.","Halder, K. R. (1999 b) Oligochaeta: Earthworm. In: State Fauna. Series 4. Fauna of Meghalaya. Part 9. Zoological Survey of India, Calcutta, pp. 393 - 439.","Gates, G. E. (1972) Burmese earthworms. An introduction to the systematics and biology of megadrile oligochaetes with special reference to southeast Asia. Transactions of the American Philosophical Society, 62 (7), 1 - 326. https: // doi. org / 10.2307 / 1006214","Blakemore, R. J. (2010) Cosmopolitan Earthworms-an Eco-Taxonomic Guide to the Peregrine Species of the World. 4 th Edition. VermEcology So (i) lutions, Yokohama, 850 pp., 350 figs., Internet links. [December 2010]"]}

90. Perionyx daflaensis Julka, 1981 Perionyx daflaensis Julka, 1981: 18. T. Kolang, district Subansiri, Arunachal Pradesh, India. D. Arunachal Pradesh: Near Kau Pass (Julka 1981), 3 km E of Richik (Julka 1981), Rui (Julka 1981)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 292, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Julka, J. M. (1981) Taxonomic studies on the earthworms collected during the Subansiri Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, Miscellaneous Publication, Occasional Paper, No. 26, 1 - 53."]}

92. Perionyx depressus Stephenson, 1914 Perionyx depressus Stephenson, 1914a: 394. Perionyx aborensis Stephenson, 1914a: 392. Perionyx depressus Stephenson. Stephenson 1923: 328. T. Rotung and Upper Rotung, Abor Hills, Arunachal Pradesh. D. Arunachal Pradesh: Renging (Stephenson 1914a), Galensinaik (Julka 1981), near Kau Pass (Julka 1981), ca. 4 km NW of Tali (Julka 1981)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 292, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1914 a) Zoological results of the Abor Expedition, 1911 - 1912. Oligochaeta. Records of the Indian Museum, 8, 365 - 410. https: // doi. org / 10.5962 / bhl. part. 1193","Stephenson, J. (1923) Oligochaeta. The Fauna of British India, including Ceylon and Burma, Taylor and Francis, London, 518 pp.","Julka, J. M. (1981) Taxonomic studies on the earthworms collected during the Subansiri Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, Miscellaneous Publication, Occasional Paper, No. 26, 1 - 53."]}

94. Perionyx fossus Stephenson, 1920 Perionyx fossus Stephenson, 1920: 214. T. Shillong, Meghalaya, India. D. Meghalaya: About 4 km from Markasa on Markasa-Nongstoi�� Road (Kharkongor 2018)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 292, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1920) On a collection of Oligochaeta from the lesser known parts of India and from eastern Persia. Memoirs of the Indian Museum, 7, 191 - 261.","Kharkongor, I. J. (2018) Taxonomic and ecological studies on the earthworms (Annelida: Oligochaeta) of West Khasi Hills District, Meghalaya. Records of the Zoological Survey of India, 118, 56 - 74. https: // doi. org / 10.26515 / rzsi / v 118 / i 1 / 2018 / 123034"]}

109. Perionyx pokhrianus pokhrianus Stephenson, 1920 Perionyx pokhrianus Stephenson, 1920: 208. Perionyx pokhrianus pokhrianus Stephenson. Blakemore 2007: 47. T. Jorpokhri, Sitong, district Darjeeling, West Bengal, India. D. West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 294, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1920) On a collection of Oligochaeta from the lesser known parts of India and from eastern Persia. Memoirs of the Indian Museum, 7, 191 - 261.","Blakemore, R. J. (2007) Checklist of 505 earthworms species from India, Sri Lanka and the adjacent regions (excluding Myanmar) compiled from various sources [e. g. Stephenson (1923), Gates (1972), Julka (1988) etc.]. In: Blakemore, R. J. (Ed.), A series of searchable texts on earthworm biodiversity, ecology and systematic from various regions of the world. 3 rd Edition. Available from: http: // www. annelida. net / earthworm (accessed 1 March 2020)"]}

98. Perionyx himalayanus Michaelsen, 1907 Perionyx himalayanus Michaelsen, 1907: 158. T. Sandakphu, district Darjeeling, West Bengal, India. D. Sikkim: Rimbi (Subedi et al. 2018b). West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 293, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Michaelsen, W. (1907) Neue Oligochaeten von Vorder-Indien, Ceylon, Birma, und den Andaman-Inseln. Jahrbuch der Hamburgischen Wissenschaftlichen Anstalten, Hamburg, 24 (2), 143 - 188.","Subedi, H. P., Saxena, R. M. & Reynolds, J. W. (2018 b) New records of earthworm species Amynthas morrisi, Perionyx himalayanus and Perionyx jorpokriensis (Oligochaeta; Megascolecidae) from Sikkim, India. Megadrilogica, 23, 69 - 77."]}

115. Perionyx shillongensis Stephenson, 1920 Perionyx shillongensis Stephenson, 1920: 213. T. Shillong, Meghalaya, India. D. Manipur: Koirengei Forest (Haokip & Singh 2017). Meghalaya: Umsing (Julka 1977), Malki Forest Shillong (Julka 1977). R. The species is dubiously distinguishable from Perionyx excavatus (Gates 1972: 146), therefore, may doubtfully be a synonym of P. excavatus (see Blakemore 2010: 267)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 295, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1920) On a collection of Oligochaeta from the lesser known parts of India and from eastern Persia. Memoirs of the Indian Museum, 7, 191 - 261.","Haokip, S. L. & Singh, T. B. (2017) Comparative studies on the earthworm community structure in the natural mixed and oak plantation sub-tropical forests ecosystem of Imphal, Manipur, India. International Journal of Ecology and Environmental Sciences, 43, 319 - 329.","Gates, G. E. (1972) Burmese earthworms. An introduction to the systematics and biology of megadrile oligochaetes with special reference to southeast Asia. Transactions of the American Philosophical Society, 62 (7), 1 - 326. https: // doi. org / 10.2307 / 1006214","Blakemore, R. J. (2010) Cosmopolitan Earthworms-an Eco-Taxonomic Guide to the Peregrine Species of the World. 4 th Edition. VermEcology So (i) lutions, Yokohama, 850 pp., 350 figs., Internet links. [December 2010]"]}

97. Perionyx heterochaetus (Stephenson, 1917) Perionyx aborensis var. heterochaetus Stephenson, 1917: 379. Perionyx heterochaetus (Stephenson). Stephenson 1923: 335. T. Pashok, district Darjeeling, West Bengal, India. D. West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 293, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1917) On a collection of Oligochaeta from various parts of India and further India. Records of the Indian Museum, 13, 353 - 416. https: // doi. org / 10.5962 / bhl. part. 5865","Stephenson, J. (1923) Oligochaeta. The Fauna of British India, including Ceylon and Burma, Taylor and Francis, London, 518 pp."]}

88. Perionyx annandalei (Michaelsen, 1907) Perionychella annandalei Michaelsen, 1907: 154. Perionyx annandalei (Michaelsen). Michaelsen 1910 (in part, excluding specimens from Cherrapunji (Meghalaya): 61. T. Kurseong, Darjeeling Hills, West Bengal, India. D. Assam: Unspecified localities (Rajkhowa et al. 2015). West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 292, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Michaelsen, W. (1907) Neue Oligochaeten von Vorder-Indien, Ceylon, Birma, und den Andaman-Inseln. Jahrbuch der Hamburgischen Wissenschaftlichen Anstalten, Hamburg, 24 (2), 143 - 188.","Michaelsen, W. (1910) Die Oligochatenfauna der vorderindisch-ceylonischen Region. Abhandlungen aus dem Gebiete der Naturwissenschaften, herausgegeben vom Naturwissenschaftlichen Verein in Hamburg, 19 (5), 1 - 108.","Rajkhowa, D. J., Bhattacharyya, P. N., Sarma, A. K., and Mahanta, K. (2015) Diversity and distribution of earthworms in different soil habitats of Assam, North-East India, an Indo-Burma Biodiversity Hotspot. Proceedings of the National Academy of Sciences, India Section B: Biological Sciences, 85 (2), 389 - 396. https: // doi. org / 10.1007 / s 40011 - 014 - 0380 - 1"]}

101. Perionyx jorpokriensis Julka, 1975 Perionyx jorpokriensis Julka, 1975: 21. T. Sukiapokri and Jorpokri, district Darjeeling, West Bengal, India. D. Sikkim: Namchi (Subedi et al. 2018b). West Bengal: 1 km E of Jorpokri (Julka 1975), Palmajoa (Soota & Halder 1981)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 293, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Subedi, H. P., Saxena, R. M. & Reynolds, J. W. (2018 b) New records of earthworm species Amynthas morrisi, Perionyx himalayanus and Perionyx jorpokriensis (Oligochaeta; Megascolecidae) from Sikkim, India. Megadrilogica, 23, 69 - 77.","Soota, T. D. & Halder, K. R. (1981) On some earthworms from eastern Himalayas. Records of the Zoological Survey of India, 79, 231 - 234."]}

112. Perionyx rimatus Stephenson, 1920 Perionyx rimatus Stephenson, 1920: 206. T. Jorpokhri, Sitong, district Darjeeling, West Bengal, India. D. West Bengal: Dow Hill Kurseong (Julka 1975)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 294, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1920) On a collection of Oligochaeta from the lesser known parts of India and from eastern Persia. Memoirs of the Indian Museum, 7, 191 - 261."]}

93. Perionyx excavatus Perrier, 1872 Perionyx excavatus Perrier, 1872: 126. Perionyx excavatus Perrier. Blakemore 2010: 267 (for further synonyms). T. Saigon, Vietnam. D. Arunachal Pradesh: Taliha (Julka 1981), Ayumuring (Julka 1981), Richik (Julka 1981), Huri (Julka 1981), Pabin (Julka 1981), Parsipapa (Julka 1981), Tumbia (Julka 1981), near Kau Pass (Julka 1981), 3 km E of Richik (Julka 1981), Kabak (Julka 1981), Vidak (Julka 1981), Chowkham (Julka 1976), Rotung (Stephenson 1914a), Renging (Stephenson 1914a), Upper Rotung (Stephenson 1914a), Miao (Halder et al. 2007), Darlak (Halder et al. 2007). Assam: Katlicherta (Stephenson 1926), Dibrugarh (Stephenson 1914a), Guwahati (Gates 1960), Sadiya (Stephenson 1914a), unspecified localities (Rajkhowa et al. 2015). Manipur: Lamphel Pat (Stephenson 1921), Imphal (Stephenson 1921), Potsengbham (Stephenson 1921), Thanga Island (Stephenson 1921). Meghalaya: Mawphlang (Julka 1977), Shillong (Julka 1977; Halder et al. 2007), Mauryngnang (Halder 1999b), Muktapur (Halder 1999b), Nonglang village (Kharkongor 2018). Mizoram: Sakawrtuichhun (Lalthanzara & Ramanujam 2014), Pachhunga University College Aizawl (Lalthanzara & Ramanujam 2014), unspecified localities (Lalthanzara et al. 2011; Ramanujam et al. 2004). Sikkim: Rangpo (Halder 2003), Gangtok (Halder 2003), Sombaria (Halder 2003), Manul (Soota & Halder 1981), Mangan (Soota & Halder 1981). Tripura: Ramnagar (Halder 2000), unspecified localities (Chaudhuri & Bhattacharjee 1999, 2005; Chaudhuri et al. 2012; Dey & Chaudhuri 2014). West Bengal: Darjeeling (Halder et al. 2007), Phallut (Michaelsen 1909), Pashok (Gates 1960), near Ghoom (Stephenson 1916), Kurseong (Michaelsen 1909), Dhobikhola Stream Kurseong (Julka 1975), Dow Hill (Julka 1975), Kalimpong (Julka 1975), near Mahananda River Siliguri (Julka 1975)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 292, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Perrier, E. (1872) Recherche pour servir a l'historie des Lombriciens terrestres. Nouvelles Archives du Museum d'Histoire Naturelle Paris, 8, 5 - 198. https: // doi. org / 10.5962 / bhl. title. 12201","Blakemore, R. J. (2010) Cosmopolitan Earthworms-an Eco-Taxonomic Guide to the Peregrine Species of the World. 4 th Edition. VermEcology So (i) lutions, Yokohama, 850 pp., 350 figs., Internet links. [December 2010]","Julka, J. M. (1981) Taxonomic studies on the earthworms collected during the Subansiri Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, Miscellaneous Publication, Occasional Paper, No. 26, 1 - 53.","Julka, J. M. (1976) Studies on the earthworms collected during the Daphabum Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, 69, 229 - 239.","Stephenson, J. (1914 a) Zoological results of the Abor Expedition, 1911 - 1912. Oligochaeta. Records of the Indian Museum, 8, 365 - 410. https: // doi. org / 10.5962 / bhl. part. 1193","Halder, K. R., Dhani, S. & Mandal, C. K. (2007) On some earthworms present in unnamed collections of Zoological Survey of India. Records of the Zoological Survey of India, 107, 79 - 93.","Stephenson, J. (1926) Descriptions of Indian Oligochaeta. I. Records of the Indian Museum, 28, 249 - 267.","Gates, G. E. (1960) On Burmese earthworms of the family Megascolecidae. Bulletin of the Museum of Comparative Zoology at Harvard College, 123 (6), 201 - 282.","Rajkhowa, D. J., Bhattacharyya, P. N., Sarma, A. K., and Mahanta, K. (2015) Diversity and distribution of earthworms in different soil habitats of Assam, North-East India, an Indo-Burma Biodiversity Hotspot. Proceedings of the National Academy of Sciences, India Section B: Biological Sciences, 85 (2), 389 - 396. https: // doi. org / 10.1007 / s 40011 - 014 - 0380 - 1","Stephenson, J. (1921) Oligochaeta from Manipur, the Laccadive Islands, Mysore, and other parts of India. Records of the Indian Museum, 22, 745 - 768. https: // doi. org / 10.5962 / bhl. part. 1484","Halder, K. R. (1999 b) Oligochaeta: Earthworm. In: State Fauna. Series 4. Fauna of Meghalaya. Part 9. Zoological Survey of India, Calcutta, pp. 393 - 439.","Kharkongor, I. J. (2018) Taxonomic and ecological studies on the earthworms (Annelida: Oligochaeta) of West Khasi Hills District, Meghalaya. Records of the Zoological Survey of India, 118, 56 - 74. https: // doi. org / 10.26515 / rzsi / v 118 / i 1 / 2018 / 123034","Lalthanzara, H. & Ramanujam, S. N. (2014) Earthworm cast production and physico-chemical properties in two agroforestry systems of Mizoram (India). Tropical Ecology, 55, 77 - 86.","Lalthanzara, H., Ramanujam, S. N. & Jha, L. K. (2011) Population dynamics of earthworms in relation to soil physico-chemical parameters in agroforestry systems of Mizoram, India. Journal of Environmental Biology, 32, 599 - 605.","Ramanujam, S. N., Lalthanzara, H. & Jha, L. K. (2004) Biodiversity of earthworms in Mizoram. Journal of Nature Conservators, 16, 129 - 134.","Halder, K. R. (2003) Oligochaeta: Earthworm. In: State Fauna. Series 9. Fauna of Sikkim. Part 5. Zoological Survey of India, Calcutta, pp. 91 - 116.","Soota, T. D. & Halder, K. R. (1981) On some earthworms from eastern Himalayas. Records of the Zoological Survey of India, 79, 231 - 234.","Halder, K. R. (2000) Oligochaeta: Earthworm. In: State Fauna. Series 7. Fauna of Tripura. Part 4. Zoological Survey of India, Calcutta, pp. 239 - 236.","Chaudhuri, P. S. & Bhattacharjee, G. (1999) Earthworm resources of Tripura. Proceedings of the National Academy of Sciences, India, 69 (B), 159 - 170.","Chaudhuri, P. S., Dey, A., Bhattacharjee, G. & Nath, S. (2012) Earthworm diversity in Tripura - present status. Science & Culture, 78 (7 - 8), 343 - 346.","Dey, A. & Chaudhuri, P. S. (2014) Earthworm community structure of pineapple (Ananas comosus) plantations under monoculture and mixed culture in West Tripura, India. Tropical Ecology, 55, 1 - 17.","Michaelsen, W. (1909) The Oligochaeta of India, Nepal, Ceylon, Burma and the Andaman Islands. Memoirs of the Indian Museum, 1, 103 - 253.","Stephenson, J. (1916) On a collection of Oligochaeta belonging to the Indian Museum. Records of the Indian Museum, 12, 299 - 354."]}

111. Perionyx pulvinatus Stephenson, 1916 Perionyx pulvinatus Stephenson, 1916: 317. T. Near Ghoom, district Darjeeling, West Bengal, India. D. West Bengal: 1 km E of Jorpokri (Julka 1975), 2 km S of D.I. Fund Rest House Jorpokri (Julka 1975)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 294, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1916) On a collection of Oligochaeta belonging to the Indian Museum. Records of the Indian Museum, 12, 299 - 354."]}

99. Perionyx horai Stephenson, 1924 Perionyx horai Stephenson, 1924b: 342. T. Cantonment Hill Cherrapunji, Meghalaya, India. D. Meghalaya: Cherrapunji (Gates 1960), Domkseh village (Kharkongor 2018)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 293, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1924 b) On some Indian Oligochaeta, with a description of two new genera of Ocnerodrilinae. Records of the Indian Museum, 26, 317 - 365.","Gates, G. E. (1960) On Burmese earthworms of the family Megascolecidae. Bulletin of the Museum of Comparative Zoology at Harvard College, 123 (6), 201 - 282.","Kharkongor, I. J. (2018) Taxonomic and ecological studies on the earthworms (Annelida: Oligochaeta) of West Khasi Hills District, Meghalaya. Records of the Zoological Survey of India, 118, 56 - 74. https: // doi. org / 10.26515 / rzsi / v 118 / i 1 / 2018 / 123034"]}

120. Perionyx vidakensis Julka, 1981 Perionyx vidakensis Julka, 1981: 27. T. Vidak, district Subansiri, Arunachal Pradesh, India. D. Arunachal Pradesh: Rui (Julka 1981), Kabak (Julka 1981)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 295, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Julka, J. M. (1981) Taxonomic studies on the earthworms collected during the Subansiri Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, Miscellaneous Publication, Occasional Paper, No. 26, 1 - 53."]}

96. Perionyx gravelyi Stephenson, 1917 Perionyx gravelyi Stephenson, 1917: 378. T. Pashok, district Darjeeling, West Bengal, India. D. Arunachal Pradesh: Ayumuring (Julka 1981), Lingpo (Julka 1981), Kolang (Julka 1981), Parsipala (Julka 1981), Rui (Julka 1981), Vidak (Julka 1981). West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 293, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1917) On a collection of Oligochaeta from various parts of India and further India. Records of the Indian Museum, 13, 353 - 416. https: // doi. org / 10.5962 / bhl. part. 5865","Julka, J. M. (1981) Taxonomic studies on the earthworms collected during the Subansiri Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, Miscellaneous Publication, Occasional Paper, No. 26, 1 - 53."]}

105. Perionyx modestus Stephenson, 1922 Perionyx modestus Stephenson, 1922: 435. T. Cherrapunji, district East Khasi Hills, Meghalaya, India. D. Arunachal Pradesh: Lingpo (Julka 1981), Yame (Julka 1981), Parsipala (Julka 1981), Richik (Julka 1981), 3 km E of Richik (Julka 1981), ca. 4 km NW of Tali (Julka 1981), Rui (Julka 1981), Chowkham (Julka 1976). Meghalaya: Umsing (Julka 1977), Mawphlang (Julka 1977; Halder 1999b), Sarching (Halder 1999b), Barangapara (Halder 1999b), Tura (Halder 1999b), Rongreng Chidekgre (Halder 1999b), Williamnagar (Halder 1999b), Dumpep (Gates 1960)., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 294, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1922) Some earthworms from Kashmir, Bombay, and other parts of India. Records of the Indian Museum, 24, 427 - 443.","Julka, J. M. (1981) Taxonomic studies on the earthworms collected during the Subansiri Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, Miscellaneous Publication, Occasional Paper, No. 26, 1 - 53.","Julka, J. M. (1976) Studies on the earthworms collected during the Daphabum Expedition in Arunachal Pradesh, India. Records of the Zoological Survey of India, 69, 229 - 239.","Halder, K. R. (1999 b) Oligochaeta: Earthworm. In: State Fauna. Series 4. Fauna of Meghalaya. Part 9. Zoological Survey of India, Calcutta, pp. 393 - 439.","Gates, G. E. (1960) On Burmese earthworms of the family Megascolecidae. Bulletin of the Museum of Comparative Zoology at Harvard College, 123 (6), 201 - 282."]}

87. Perionyx alatus Stephenson, 1920 Perionyx alatus Stephenson, 1920: 212. T. Sitong Ridge, district Darjeeling, West Bengal, India. D. West Bengal., Published as part of Tiwari, Nalini, Paliwal, R., Rashid, Azhar & Yadav, Shweta, 2020, Checklist of earthworm species (Oligochaeta) of the North Eastern Region of India, pp. 277-305 in Zootaxa 4772 (2) on page 291, DOI: 10.11646/zootaxa.4772.2.3, http://zenodo.org/record/3974785, {"references":["Stephenson, J. (1920) On a collection of Oligochaeta from the lesser known parts of India and from eastern Persia. Memoirs of the Indian Museum, 7, 191 - 261."]}