Taxonomic studies of marine dinoflagellates and distribution in the coastal waters of Kakinada, Andhra Pradesh, India Author Bhowal, A Zoological Survey of India, Protozoology Section, M Block, New Alipore, Kolkata, West Bengal - 700 053, India & Department of Zoology, University of Calcutta, Kolkata, West Bengal - 700 019, India * [E-mail: jasbose @ gmail. com] Author Purushothaman, J Zoological Survey of India, Protozoology Section, M Block, New Alipore, Kolkata, West Bengal - 700 053, India jasbose@gmail.com Author Siddique, A Zoological Survey of India, Protozoology Section, M Block, New Alipore, Kolkata, West Bengal - 700 053, India & Department of Zoology, University of Calcutta, Kolkata, West Bengal - 700 019, India * [E-mail: jasbose @ gmail. com] text Indian Journal of Geo Marine Sciences 2023 2023-08-31 52 8 390 401 journal article 299611 10.56042/ijms.v52i08.11023 007f04a1-b276-4297-b014-76644398954f 2582-6727 11622455 13. Tripos vultur (Cleve) F. Gómez, 2013 Diagnostic characters: Thecate dinoflagellate with robust cell body. Epitheca forms a straight, tapering apical horn, while from the hypotheca arises two antapical horns bent at abrupt angles with respect to the body. The antapical horns are directed outwards. The specimens have been seen forming chains ( Fig. 2n & o ). Distribution: South Andaman region, India 20 , Great Nicobar Island, Andaman Sea 21 , Bay of Bengal 13 , Indian Ocean 11 , Mediterranean waters 26 , Vitória-Trindade Seamount Chain, South Atlantic Ocean 35 , Brazil waters 29 , Mexican waters, Pacific Ocean 33 , Australian waters 31 . This species was recorded from the station APK3 (subsurface depths) for the first time in Kakinada waters, and in the state of Andhra Pradesh .