Free-living marine nematodes in Andhra Pradesh Coast, India Author Sivaleela, Gunasekaran Author Surendar, Chandra Author Kumar, Rubavath Rajendar text Records of the Zoological Survey of India 2021 121 2 283 301 journal article 10.26515/rzsi/v121/i2/2021/151251 2581-8686 13186309 4. Adoncholaimus thalassophygas (de Man, 1876) Filipjev, 1918 1876. Oncholaimus thalassophygas de Man, Vereen. 2 : 181. Material examined : 2♀ (Reg.No. N.344), Mangamaripeta, 3.iv.2016 , Coll. G. Sivaleela. Diagnostic characters : This is characterized by the presence of long spicule in the male. Size is smaller than A. fuscus . Distribution : Andhra Coast ( Ghosh & Mandal, 2016 ), Kalba Devi Ratnagiri. (Ingole, 2011), Cochin mangroves. (Chinnadurai & Oliva Fernando, 2006c). Elsewhere : UK coast- Blythe estuary, Skippers Island, Exe estuary, Loch Etive, Scotland . Remarks : The specimens examined well to the description of Platt & Warwick, 1983 in the Cephalic papillae and buccal teeth as in A. fuscus & amphids length differ from A. fuscus 0.3 times c.d wide. Excretory pore 1.4 buccal cavity length from anterior. Tail 3 a.b.d and tapered.