THE CANCROID CRABS OF AMERICA 47 



rounded tips, and more advanced than the outer and inner supraor- 

 bital teeth. This last is similar to that of anceps. Of the antero- 

 lateral teeth the second, fourth and sixth are smaller than the others; 

 all are appressed and sharp-pointed, and directed obliquely inward 

 except the last 2 or 3 which are directed forward or a little outward. 

 Lateral spine broad at base, as long as the space occupied by the three 

 adjacent teeth, and curved a little forward. 



The 2 spines on the distal half of the inner margin of the merus of 

 the cheliped are much longer and stronger than the pair on the prox- 

 imal half; at the distal end of the outer margin there is no spine but a 

 flattened plate {lame of A. Milne Edwards) or fold with a sharp edge 

 which projects almost imperceptibly beyond the adjacent distal edge 

 of the arm. The figure of the type shows, incorrectly, a projecting 

 spine of good length. A longer, stronger spine at the inner angle of the 

 wrist than on the outer side. Of the two spines on the upper margin 

 of the palm the proximal one is high and laminar and situated at 

 the distal third of the margin. Merus of swimming leg unarmed. 

 Terminal segement of male abdomen longer than in anceps. 



Color. — On the carapace a large postero-lateral area and a postor- 

 bital triangle are slate-color, as are also the greater part of the upper 

 surface of the merus of the cheliped, the infero-proximal two-thirds of 

 outer face of manus and the basal half of fingers ; rest of surface a sort 

 of ecru drab and buff pink; fingers distally almost salmon buff with 

 extreme tips nearly white. Spines on inner margin of arm nearly 

 white. The ambulatory legs have areas of gray on the middle portion 

 of merus, carpus and propodus, these patches being much less exten- 

 sive on the third ambulatory, where there is also a small patch of 

 maroon on the same three articles; a maroon spot on merus and pro- 

 podus of swimming leg; remainder of this propodus as well as the 

 whole of the dactylus transparent. Some specimens are much lighter, 

 slate areas on carapace considerably reduced and lighter, chelipeds 

 with just a median spot of color, and other legs transparent instead of 

 slate; light areas on carapace and legs almost white, cream with the 

 slightest trace of pinkish buff. Eggs of female cadmium yellow. The 

 blackest specimen had the black areas of the carapace united across 

 posterior margin, the spots on the hind legs almost dragon's blood red 

 and inside of base of fixed finger almost carmine; no drab area present. 

 (Schmitt.) 



Measurements. — Female (53763), total length of carapace 14.2, 

 width of same 27.4, width at base of lateral spine 22.2, fronto-orbital 

 width 11.8, width of front 4.1 mm. 



Range. — Georgia or Florida to Brazil. 



Material examined. — See table, page 48. 



