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Sessile peritrichs are a large assemblage of ciliates that have a wide distribution in soil, freshwater and marine waters. Here, we document four new and one unidentified species of solitary sessile peritrichs from aquaculture ponds and coastal waters of the northern Yellow Sea, China. Based on their living morphology, infraciliature and silverline system, four of the five forms were identified as new members belonging to one of three genera, Vorticella , Pseudovorticella and Scyphidia, representing two families, Vorticellidae and Scyphidiidae. The other isolate was found to be an unidentified species of the poorly known genus Paravorticella . Vorticella chiangi sp. nov. is characterized by its inverted bell-shaped zooid, short row 3 in infundibular polykinety 3 and marine habitat. Pseudovorticella liangae sp. nov. posseses a thin, broad peristomial lip and a granular pellicle. Pseudovorticella haiboensis sp. nov. is differentiated from its congeners by having an elongated zooid that is covered by a layer of thin pellicular vesicles, and two rows of kineties in infundibular polykinety 3. Scyphidia perezuzae sp. nov. and Paravorticella sp. are stalkless ectoparasites or ectocommensals of aquatic animals. The former has a short, plump body, a narrow peristomial lip and a conspicuous, flattened, disc-shaped scopula for adhesion. Paravorticella sp. has an extremely elongated clavate body, a broad peristomial lip, and a narrow scopula. [ABSTRACT FROM AUTHOR]

Ten new species of myxosporeans found from marine fishes were collected from coastal waters off the Yellow Sea in China: Sphaerospora sebasta sp. n. coelozoic in the gall bladder of Sebastes schlegeli, Ceratomyxa hemitriptera sp. n. coelozoic in the gall bladder of Hemitripterus villosus, Ceratomyxa kareus sp. n. coelozoic in the gall bladders of Kareius bicoloratus and Zebrias zebra, Ceratomyxa lateolabrax sp. n. and Ceratomyxa lomi sp. n. coelozoic in the gall bladder of Lateolabrax japonicus, Ceratomyxa qingdaoensis sp. n. coelozoic in the urinary bladder of Argyrosomus argentatus, Ceratomyxa saurida sp. n. coelozoic in the gall bladder of Saurida elongata, Ceratomyxa sebastisca sp. n. coelozoic in the gall bladder of Sebastiscus sp., Ceratomyxa simplex sp. n. coelozoic in the gall bladder of Chirolophis japonicus and Ceratomyxa triacantha sp. n. coelozoic in the gall bladder and bile of Triacanthus brevirostris. All those forms were described in a book chapter cited as "known forms" several years ago, but have never been formally established as new taxa which are thus officially reported here. The present contribution only provided the morphology and geographic distribution of these organisms. [ABSTRACT FROM AUTHOR]

Abstract: Two new marine scuticociliates, Pleuronema sinica n. sp. and P. wilberti n. sp., collected from the sand beach of Qingdao, China, were investigated in vivo and following protargol impregnation. Ciliates of the genus Pleuronema are normally recognizable by their large sail-like paroral membrane although one species, P. grolierei, has shorter cilia in the paroral membrane. Neither of the new forms has the conspicuous paroral membrane in vivo so in this respect they are not typical members of this genus. Pleuronema sinica is characterized by its large, conspicuously flattened body, the possession of only one preoral kinety, the irregular-shaped macronucleus and the rather unusual structure of the oral apparatus. By contrast P. wilberti has a medium-size broad-oval body, six to eight preoral kineties and a highly differentiated membranelle 3 that is five- or six-rowed. An identification key is supplied for the 15 species of Pleuronema for which the infraciliature is known. [Copyright &y& Elsevier]