DECAPOD CRUSTACEANS OF THE WEST INDIES 169 



Distribution. — Bermudas and Florida to Estado da Paraiba, 

 Brazil (Bermudas, Green Turtle Cay, New Providence I., Cuba, 

 Jamaica, Puerto Rico, Saint Thomas, Saint Croix) ; eastern Atlantic 

 from Senegal to the Congo. 



62. Pachygrapsus transversus (Gibbes) 



Figure 52A; 



Grapsus transversus Gibbes, 1850, p. 181 [type-locality: Key West, Florida]. 

 Pachygrapsus transversus. — Gibbes, 1850, p. 182 [by implication]. — Rathbun, 



1918, p. 244, pi. 61: figs. 2, 3.— Monod, 1956, p. 415, figs. 568, 570, 572, 



573.— HartnoU, 1965, pp. 114, 135, 141, 144, 146, figs. 13a-c. 

 Goniograpsus innotatus Dana, 1951, p. 249 [type-locality: coast of South 



America?]. 

 Leptograpsus rugulosus H. Milne Edwards, 1853, p. 172 [type-locality: Brazil]. 

 Metopograpsus dubius De Saussure, 1858, p. 445, pi. 2: fig. 16 [type-locality: 



Saint Thomas]. 

 Metopograpsus miniatus De Saussure, 1858, p. 444, pi. 2: fig. 17 [type-locahty : 



Saint Thomas]. 

 Pachygrapsus intermedius Heller, 1862b, p. 521 [type-locality: Rio de Janeiro, 



Brazil]. 

 Grapsus declivifrons Heller, 1862b, p. 521 [type-locality: Rio de Janeiro, Brazil]. 

 Pachygrapsus socius Stimpson, 1871, p. 114 [type-localities: Cabo San Lucas and 



Manzanillo, Mexico; Republic of El Salvador; Panama; Peru]. 



Diagnosis. — Carapace trapezoidal, about three-fourths as long in 

 midline as wide, convex longitudinally and transversely, striate 

 anteriorly and laterally, smooth on cardiac and intestinal regions; 

 lateral margins strongly converging posteriorly, straight or faintly 

 convex, with acute tooth posterior to outer orbital angle, fronto- 

 orbital distance only slightly less than maximum width of carapace; 

 front slightly depressed but not deflexed at postfrontal lobes, less 

 than three-fifths as wide as carapace, margin slightly bilobed or 

 sinuous in dorsal view. Eyes well developed, cornea about as wide as 

 eyestalks. Ventral margin of orbit strongly produced, especially in 

 mesial half, denticulate, curving to anterolateral angle of mouth 

 area. Third maxillipeds without oblique hairy ridge, gaping, exposing 

 mandibles. Chelipeds subequal, carpus armed with acute distally 

 directed tooth on flexor margin; palm with low longitudinal dorsal 

 ridge or carina; fingers narrowly rounded distaUy, spoon tipped, 

 movable finger rounded, smooth, not tuberculate on extensor margin. 

 Walking legs moderately broad and flattened, merus of third pereiopod 

 nearly half as wide as long, with sharp subdistal tooth on extensor 

 margin; dactyl nearly as long as extensor margin of propodus. First 

 pleopod of male slender, angulated, terminating in posterior view in 

 long corneous obliquely T-shaped endpiece (fig. 52k). A small species, 

 maximum carapace length in midline about 14 mm. 



