Revision of the family Chasmocarcinidae Serène, 1964 (Crustacea, Brachyura, Goneplacoidea) Author Ng, Peter K. L. Author Castro, Peter text Zootaxa 2016 4209 1 1 182 journal article 37321 10.11646/zootaxa.4209.1.1 2de5b7bf-3975-458a-b200-07ec69f4e013 1175-5326 272646 849BAB5C-464A-4B4A-A586-5742411EDC01 Key to species of Chinommatia n. gen. 1. Carapace, chelipeds, ambulatory legs covered with dense, stiff setae that obscure margins [Vanuatu]........ C. turpis n. sp. - Carapace, chelipeds, ambulatory legs can be covered with low pubescence or scattered setae that never obscure margins or surface................................................................................................2 2. Anteroexternal angle of merus of third maxilliped with broad, auriculiform structure (e.g., Fig. 32 A).................. 3 - Anteroexternal angle of merus of third maxilliped not auriculiform (e.g., Fig. 32 E)................................. 4 3. Inner surface of minor male chela, at base of pollex, with large, swollen tooth ( Fig. 44 A, B). Ventral margin of ambulatory merus with small spines even in large individuals ( Fig. 44 F). Distal half of G1 distinctly curved ( Fig. 75 A) [ South China Sea ; Philippines ]............................................................................... C. cavimanus - Inner surface of minor male chela, at base of pollex, with distinct bilobed tooth ( Fig. 44 C, D). Ventral margin of ambulatory merus with prominent spines in large individuals ( Fig. 44 H). Distal half of G1 relatively straight ( Fig. 75 J) [Papua New Guinea; Fiji].......................................................................... C. bicuspida n. sp. 4. Carapace relatively quadrate ( Fig. 14 G–J). G1 relatively stout, tip can be flared ( Fig. 75 E, G). Long, slender ambulatory legs ( Fig. 14 G–J) [? Philippines ; Malaysia ( Sarawak ); Indonesia ]............................................ C. bruuni - Carapace ovate with anterolateral margins arcuate ( Fig. 15 A). G1 not known. Relatively short, stout ambulatory legs ( Fig. 15 A; Tesch 1918 : pl. 9, fig. 3) [ Indonesia ]........................................................ C. littoralis