THE CANCROID CRABS OF AMERICA 403 



(two, one behind the other), and on the midribs of the lateral teeth. 

 Edge of front thin, with a median V; lobes sUghtly obhque, nearly 

 straight, outer angles deflexed and but very Uttle, almost imper- 

 ceptibly, advanced; side margins oblique, outer corners rounded. 

 Upper orbital margin between fissures wide, slightly arched. Five 

 well-marked lateral teeth, sinus deep between first and second; the 

 first four teeth increase successively in size ; second tooth with convex 

 outer margin and blunt tip; third, fourth, and fifth most prominent, 

 thick, subacute; fifth directed outward. 



Chelipeds not very heavy nor very unequal, coarsely and closely 

 granulate; merus margined above, ending in a minute subdistal point. 

 Carpus uneven with a few tubercles and a very wide and deep distal 

 groove. Manus deeply grooved along upper surface; a broader 

 shallower groove on upper part of outer surface. Fingers deeply 

 grooved, intervening ridges partly granulate; tips acute, fingers not 

 gaping; color white, appar- 

 ently not continued on 

 palm. Legs granulate 

 along anterior margin. 



Measurements. — Female 

 holotype, length of cara- 

 pace 5.5, width of same 

 7.4, fronto-orbital width 5, 



width of front 2 4 mm figure 62.— Hexapanopeus quinquedentatus. a. Male, 



RIGHT CHELA, X 10. 6. FEMALE, CARAPACE, X 4 



Range. — Porto Rico. 



Material examined. — Porto Rico; 1899; Fish Hawk: 



Mayaguez; January 19; 1 female, holotype (23769); chelae equal 

 and both of the minor sort N^thout basal tooth on the dactyl. 



Mayaguez Harbor; customhouse, E. by S. J^ S., 2J< miles; 12 

 fathoms; stky. M.; January 19; station 6060; 1 ovigerous female 

 (24245). 



Off Porto Real; Punta Guaniquilla, S. ji E., 2 miles; 8.5 fathoms; 

 Co. S.; January 25; station 6074; 1 immature female (24244). 



Off Boca Prieta; Punta Guaniquilla, S. SE., 3% miles; 8.5 fathoms; 

 Co. S.; January 25; station 6075; 1 immature female (24243). 



Relation. — H. quinquedentatus resembles sinaloensis in the deep sinus 

 betw^een the first and second lateral teeth, but is a much rougher 

 species with more outstanding third, fourth, and fifth teeth and 

 straighter, more transverse front. 



Genus EURYPANOPEUS A. Milne Edwards 



Eurypanopeus A. Milne Edwards, Crust. Reg. Mex., 1880, p. 318; type, 

 E. crenatus (Milne Edwards and Lucas). 



Carapace rather broad, length about two-thirds width, oval, de- 

 pressed or convex, regions not strongly marked or areolated, often 



