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Present Paper deals with 20 taxa of Trentepoholia which includes 23 species 21 genera and 4 varieties. Of these Trentepoholia iolithus Walroth, Trentepoholiadia leptaHariot, Trentepoholia aurea Martius, Trentepoholia arborum Agardh and Trentepoholia umbrina Bornet are first time reported from Purvanchal and bordering area of Bihar, They constitute new record for the area.

Aim: The present study was aimed at development of the cephalometric norms for orthognathic surgery for the population of eastern Uttar Pradesh in North India. Settings and design: This study was conducted at a dental college. Materials and Methods: The study sample consisted of 50 males and 50 females. Each lateral cephalogram was taken in occlusion and subsequently traced. All reference points, landmarks, and measurements were made according to cephalometrics for orthognathic surgery (COGS) system. Statistical analysis used: The statistical analysis involved calculation of mean and standard deviation for each of the 23 parameters assessed for each subject. The data was subsequently compared with COGS study by using Normal (Z) test. Results: The norms were derived for the purvanchal population of North India and these were found to be quite distinct compared to those obtained from COGS study with respect to specific parameters. Conclusion: Male subjects indicated greater prominence of chin relative to the face, decreased posterior divergence, infraeruption of upper and lower molar as well as lower incisors, decreased total effective length of the maxilla, tendency towards Class III occlusion, and procumbent lower incisors. Female subjects, however, indicated increased anterior cranial base length, greater prominence of chin relative to the face, prognathic maxilla and mandible, increased middle third facial height, infraerupted lower incisors, increased mandibular body length, and procumbent lower incisors.