THE GEAPSOID CRABS OF AMERICA. 237 



GONIOPSIS CRUENTATA (Latreille). 



MANGROVE CRAB; TREE GRAB. 



Plate 57. 



Cancer ruricola DE GEEK, Mem. pour servir & 1'Hist. des Insectes, vol. 7, 



1778, p. 417, pi. 25 (not C. ruricola Linnaeus). 



Grapsus crucntatus LATREILLE, Hist. Nat. Crust., vol. 6, 1803, p. 70 (type- 

 locality, Ics ties de I'Amtrique mtridionale; type in Paris Mus.). 

 Gecarcinus ruricola MACLEAY, Trans. Zool. Soc. London, vol. 1, 1835, p. 184, 



not G. ruricola (Linnaeus). 

 Grapsus (Goniopsis) cruentatus DE HAAN, Fauna Japon., Crust., 1835, 



p. 33. 

 Grapsus longipcs RANDALL, Journ. Acad. Nat. Sci. Philadelphia, vol. 8, 



1839 (1840), p. 125 (type-locality, Surinam; type in Mus. Phila. Acad. 



Sci.). 

 Goniopsis ruricola WHITE, List Crust. Brit. Mus., 1847, p. 40. SAUSSITIE, 



M6m. Soc. Phys. Hist. Nat. GenSve, vol. 14, 1858, p. 30, pi. 2, figs. 



18, 18o. 

 Grapsus pelii HEBKLOTS, Addit. Faunam Afr. Occ., 1851, p. 8, pi. 1, figs. 6 



and 7 (type-locality, prope Boutry ; type in Leyden Mus.). 

 Gonioarapsus cruentatus DANA, U. S. Expl. Exped., vol. 13, Crust., pt. 1, 



1852, p. 342 ; atlas, 1855, pi. 21, fig. 7. 

 Goniopsis crucntata RATHBUN, Bull. U. S. Fish Comm., vol. 20, for 1900, 



pt. 2 (1901), p. 15, pi. 1 (colored). 



Diagnosis. Carapace quadrate, with one side tooth. Front ver- 

 tical. Antenna excluded from orbit. Fossa fringed with hair 

 between coxae of second and third legs. 

 Color yellow or red. 



Description. Carapace widening a 

 little behind, sides a little curved, 

 branchial region swollen above the 

 level of the cardiac and intestinal re- 

 gions. Surface between ridges very 

 finely wrinkled. 



Median pair of frontal lobes a little 

 wider than outer pair. Surface of FIG. 136. GONIOPSIS CRUBNTATA. 



front tllberculate, lower edge nearly *> OUTER MAXILLIPED, ENLARGED, 



'. . ' (AFTEU MILXE EDWARDS) ; o, 



Straight, thin, projecting, crenulate. LEFT FIRST APPENDAGE OP ABDO- 



Merus of chelipeds prominently MEN OB< MALE (7G77) - LOWEIi 

 . , , r . j j SIDE ' x 2 - 



ridged; inner margin expanded in 



a broad lamina with edge coarsely dentate or spinate; outer mar- 

 gin with smaller teeth. Carpus tuberculate, inner angle armed with 

 a few denticles. Outer surface of chelae for the most part smooth 

 and flat, with rows of spiniform tubercles above and below; inner 

 face of palm sparingly tuberculate. Tips of fingers hollowed out 

 in shallow, inconspicuous spoons. 



The second or longest pair of legs is about twice as long as the 

 carapace. The merus joints of all the legs are about twice as long 



