Nanogalathea Raymondi, a New Genus and Species of Galatheidae (Decapoda, Anomura) From the Bay of Bengal

Abstract

A fairly large collection of Galatheidae, obtained by the International Indian Ocean Expedition (IIOE) 1963-1964 and deposited in the Smithsonian Institu-tion, has very kindly been made available for study. The collection reveals several new species and two new genera: Comlliogalathea was established earlier (Baba & Javed, 1974) for inclusion of specimens from Madagascar; in the present paper a new genus and species is described for two females from the Bay of Bengal. N a n o g a l a t h e a new genus Diagnosis. — Size small. Rostrum broadly triangular, concave dorsally, carinated on ventral side, lateral margins finely serrated, notched near apex, and without any teeth. Dorsal surface of carapace coarse, unarmed, with weak striations; bran-chial region with marginal spines, outer orbital angle armed. Abdomen unarmed. Ocular peduncle short and dilated, cornea cap-like. Basal antennular segment globular, short and stout with at least four distinct terminal spines. Second segment of antennal peduncle with outer and inner marginal spines. Ischium of third maxilliped triangular in cross section, distinctly longer than merus. Third thoracic