THE GRAPSOID CRABS OP AMERICA. 27 



Diagnosis. Two lateral spines. Orbital spine not long. A tooth 

 on arm and \vrist. 



Description. Carapace less uneven than in G. barbata, a slight 

 depression behind the orbit. Front and orbits with a distinct mar- 

 ginal line. No notch on upper margin of orbit; outer spine shorter 

 than in ~ba.rba.ta. 



Arm projecting well beyond the carapace, a small tooth at about 

 the middle of its outer margin. A small blunt tooth at inner angle 

 of wrist. Propodus with a longitudinal groove on outer surface just 

 above lower margin, and a more oblique and shorter groove on inner 

 surface. Pollex much broader than dactylus. Fingers with shallow, 

 irregular teeth. 



Dactyli of first three pairs of legs slender and longer than their 

 propodi. Last pair of legs with the last three joints broader than in 

 the other legs, and broader than in barbata. 



Measurements. Adult female, station 254, length of carapace 8.2, 

 fronto-orbital width 13. posterior width 6.3, length of lateral margin 

 7 mm. 



Material examined Oft Grenada ; lat. 11 27' 00" N. ; long. 62 

 11' 00" W.; 1G4 fathoms; S. Sh.; temp. 57 F.; Feb. 27, 1879; sta- 

 tion 254, Str. Blake; 1 female (Cat. No. 4117, M. C. Z.). 



Other records. Off Grenada ; lat. 11 25' 00" N. ; long. G2 04' 

 15" W.; 92 fathoms; Co. brk. Sh.; temp. 58.5 F.; Feb. 27, 1879; 

 station 253, Str. Blake; 1 female ovig., holotype (Paris Mus.). 



GONEPLAX ROSAEA (A. Milne Edwards). 



FrcviUca rosaa A. MILNE EDWARDS, Bull. Mus. Comp. Zool., vol. 8, 1SSO, 

 p. 15 (type-locality, St. Vincent, 88, correctly 87, fathoms, station 232, 

 Blake; holotype in Paris Mus.). 



Diagnosis. Sides almost parallel. Two lateral spines or teeth. 



Description. Carapace thicker and narrower anteriorly than in 

 G. barbata, the lateral margins being almost parallel. Front wider, 

 its margin straighter. Eyestalks shorter and stouter. The postorbital 

 angle is formed by a sharp tooth, behind which there is a small 

 tuberculiform swelling followed by a short but sharp hepatic spine. 

 Chelipeds and legs as in G. barbata. 



Measurements. Female holotype, length of carapace 15, width of 

 same 20 mm. 



Type-locality. Off St. Vincent; lat. 13 06' 45" N.; long. 61 06' 

 55" W.; 87 fathoms; Co.; temp. 62 F.; Feb. 21, 1879; station 232, 

 Str. Blake; female holotype in Paris Mus. (After A. Milne Ed- 

 wards.) 



