THE CANCROID CRABS OF AMERICA 383 



BAHAMAS. — Bahamas; from living sponges; 1888; Frederick 

 Stearns: 5 specimens (42801). West side Andros Island; 10 speci- 

 mens (42802). Andros Banks; 2 specimens (42800). 



Off Governor's Harbor, Eleuthera Island; 5 fathoms, in oyster 

 dredge; July 7, 1903; B. A. Bean; 3 males, 2 females (31056), received 

 from Geographic Society of Baltimore. 



CUBA. — Esperanza; shallow water; May 11, 1924; Henderson and 

 Bartsch, Tomas Barrera Exped.; 1 male (48519). 



Genus HEXAPANOPEUS Rathbun 



Hexapanopeus Rathbun, Bull. Lab. Nat. Hist. State Univ. Iowa, vol. 4, 1898, 

 p. 273; type, H. angustifrons (Benedict and Rathbun); BuU. U. S. Fish 

 Comm. for 1900, vol. 2, 1901, p. 30. 



Carapace narrow (the length three-fourths or more of width), hexa- 

 gonal, regions well delimited. Antero-lateral margin arcuate, about 

 as long as postero-lateral, five-toothed, teeth prominent, orbital or 

 first tooth partly fused with second, fourth tooth very prominent, 

 fifth sometimes much smaller and almost postlateral in position. 

 Postero-lateral margins strongly converging. Fronto-orbital border 

 from half to three-fourths the greatest width of the carapace. Front 

 from a fourth to about a third the greatest width of the carapace. 

 Front advanced, with a median notch and oblique, sinuous or straight 

 lobes separated from inner orbital angle by a notch. Orbital margin 

 with a well-marked lobe between sinuses above; otherwise the orbits 

 are similar to those of Panopeus. Basal article of antenna narrow, 

 as in Eurypanopeus. 



Distinguished from Eurypanopeus chiefly by the hexagonal, narrow 

 carapace with produced front and very convergent postero-lateral 

 margins. 



From southern Massachusetts to Uruguay; west coast of Mexico. 



KEY TO THE SPECIES OF THE GENUS HEXAPANOPEUS " 



A'. Fingers either black or horn color. 

 B'. Fifth lateral tooth well developed. 



C^ Color of immovale finger continued slightly backward on palm, end- 

 ing in an oblique line. 

 D^ Margin of front with a small tooth or lobule at outer ends. 



E^ Carpus of cheliped not covered with tubercles although it 

 may be lumpy. 

 F^. Tips of lateral teeth not tuberculiform. Supraorbital 

 lobe wide, more than half as wide as the distance to 



tip of inner orbital tooth o.ngustifrons, p. 384. 



F^. Tips of lateral teeth tuberculiform. Supra-orbital lobe 

 narrow, less than half as wide as the distance to 

 tip of inner orbital tooth orcutti, p. 397. 



<' H. hirsutus Boone, Bull. Bingham Ocean. Coll., vol. 1, art. 2, lft27, p. 27, fig. 7, Isle of Pines, is 

 Panopeus karttii; figure unrecognizable. 



