“ Symmetrical ” hermit crabs of the family Pylochelidae (Crustacea: Decapoda: Anomura) collected by the “ BIOPAPUA ” and “ PAPUA NIUGINI ” expeditions in the Papua New Guinea, with descriptions of two new species Author Komai, Tomoyuki Author Chan, Tin-Yam text Zootaxa 2016 4088 3 301 328 journal article 10.11646/zootaxa.4088.3.1 c09a5f42-c1ac-4b6c-a98d-d836a56711db 1175-5326 267464 D055AB86-A0A2-4E30-8671-4B0990C478FB Genus Bathycheles Forest, 1987 Remarks . Bathycheles was originally established as a subgenus of Pylocheles by Forest (1987a), but subsequently raised to a full genus by McLaughlin & Lemaitre (2009). Within Pylochelinae , it is easily recognized by the reduced, non-pigmented corneas and non-operculate chelipeds. Two species are recorded from the study areas, representing the most abundant pylochelids.