Bathymunida
Bathymunida Balss, (1914): 5 [type species: Bathymunida polae Balss, 1914. Gender: feminine]. – Van Dam, 1938: 194. – Baba 1988: 53. – Baba and de Saint Laurent 1996: 446. – Baba 2005: 71. – Baba et al. 2008: 56 (list of species and synonymies).
Carapace with transverse striae usually interrupted, often reduced, with pair of small epigastric spines; keel-like process on gastric and cardiac regions. Rostral base broad, rostral and supraocular spines widely separated. Abdominal somites 2–4 each having anterior ridge with pair of submedian spines; papilla-like lateral spines often on somite 2, rarely on somite 3, none on somite 4. Telson subdivision incomplete. Sternite 4 with broad, concave anterior margin contiguous to entire posterior margin of sternite 3. Eyes large, cornea dilated. Article 1 of antennule with distolateral spine larger than distomesial; lateral spine small. Article 1 of antenna usually with small distomesial spine. Mxp3 having distal 2 articles reduced; ischium with distinct spine on flexor distal margin; merus very short, bearing submedian spine on flexor margin and distal spine on extensor margin. P2–4 dactyli slender, curving, flexor margin entire or with a few seta-like movable spines. P5 having flexor face of palm with brush of plumose setae often continued on to part of fixed finger; movable finger of male usually with a set of ribbon-like setae on proximal portion. G1 absent; G2 present.