160 U.S. NATIONAL MUSEUM BULLETIN 29 2 



Atlantic from Senegal to northern Angola; eastern Pacific from 

 southern Baja California to northern Chile; Hawaii. 

 Dominica Stations: 6, 110, 114 (0-5 ft.). 



Genus Goniopsis 



58. Goniopsis cruentata (Latreille) 

 Figures 49, 52d-/ 



Grapsus cruentatus Latreille, 1802, p. 70 [type-locality: the islands of South 



America]. 

 Grapsus (Goniopsis) cruentatus. — De Haan, 1835, p. 33. 

 Grapsus longipes Randall, 1840, p. 125 [type-locahty: Surinam]. 

 Grapsus pelii Herklots, 1851, p. 8, pi. 1: figs. 6, 7 [type-locality: "prope Boutry" 



(Ghana, according to Monod, 1956)]. 

 Grapsus siynplex Herklots, 1851, p. 9, pi. 1: fig. 8 [type-locality: "prope Boutry" 



(Ghana)]. 

 Goniograpsus cruentatus. — Dana, 1852, p. 342. 



Goniopsis cruentatus. — H. Milne Edwards, 1853, p. 164, pi. 7: figs. 2-2b. 

 Goniopsis cruentata. — Rathbun, 1901, p. 15, pi. 1 [colored]; 1918, p. 237, pi. 



57.— Monod, 1956, p. 412, figs. 564-567.— Holthuis, 1959, p. 235, figs. 59, 



60. 



Diagnosis. — Carapace subrectangular, more than four-fifths as 

 long as broad, rather flat anteriorly, noticeably inflated in large 

 specimens on mesial portions of branchial regions bordering cardiac 

 and intestinal regions, striations distinct laterally and anteriorly, 

 absent on most of gastric, cardiac, and intestinal regions; lateral 

 margins converging slightly anteriorly, with acute tooth posterior to 

 outer orbital angle, fronto-orbital distance more than nine-tenths of 

 maximum width of carapace; front sharply deflexed at postfrontal 

 lobes, about half as wide as carapace, margin nearly straight in dorsal 

 view. Eyes well developed, cornea about as w^de as eyestalk. Ventral 

 margin of orbit sharply produced, bluntly denticulate and somewhat 

 concave in median portion, curving ventrally to anterolateral angle 

 of mouth area. Third maxillipeds without oblique hairy ridge, widely 

 gaping, exposing mandibles. Chelipeds subequal, carpus armed with 

 few short spines on flexor margin; palm roughened dorsaUy by scat- 

 tered spiniform tubercles arranged roughly in oblique rows; fingers 

 rather pointed, inconspicuously spoon tipped, extensor margin of 

 movable finger bearing large, sharp, irregular tubercles. Walking legs 

 broad and flattened, merus of third pereiopod about half as wide 

 as long, with distinct acute subdistal tooth on extensor margin; 

 dactyl slightly shorter than extensor margin of propodus. Denuded 

 first pleopod of male terminating, in posterior view, in rounded end 

 overreaching broad, notched chitinous endpiece projecting only slightly 

 from lateral surface of appendage (fig. 52d). Color pattern charac- 



