Bathygyge Hansen, 1897 DIAGNOSIS (after Markham, 1985a): Female: Body subcircular. Coxal plates large; oostegites about half covering marsupium. Small pleon sharply rotated, of six distinct separated pleomeres, lacking lateral plates, pleopods and uropods biramous. Male: All pereomeres distinct. Propodus of each pereopod produced into ventrodistal projection receiving tip of dactylus. Pleon fused, ovate, bulbous, about 1/4 total body length, lacking appendages and most traces of segmentation. TYPE SPECIES: Bathygyge grandis Hansen, 1897, by monotypy. OTHER SPECIES: None.

Published as part of An, Jianmei, Boyko, Christopher B. & Li, Xinzheng, 2015, A Review Of Bopyrids (Crustacea: Isopoda: Bopyridae) Parasitic On Caridean Shrimps (Crustacea: Decapoda: Caridea) From China, pp. 1-85 in Bulletin of the American Museum of Natural History 2015 (399) on page 29, DOI: 10.1206/amnb-921-00-01.1, http://zenodo.org/record/4612506