THE CANCROID CRABS OF AMERICA 411 



Chelipeds very unequal and dissimilar. The acute, granulate upper 

 margin of the merus ends distally at the transverse groove with a 

 small slender spinule. Inner tooth of carpus tipped with a similar 

 spinule. Height of palm as great as superior length. Major chela 

 heavy, propodal finger nearly horizontal, both fingers stout, gaping, 

 an enlarged tooth at base of dactyl. In the minor chela, the fingers 

 are almost as bulky as the palm, distal half spooned and fitting close 

 together, proximal half finely denticulate and with a small gape. 

 Ambulatory legs with a ragged hairiness. 



Third segment of male abdomen pointed at ends, sixth segment 

 narrowing a little toward the fifth, terminal segment triangular with 

 end rounded. 



Color. — Dark olive brown; fingers black or dark bro^vn, the color 

 of the propodal finger prolonged well back and up on the palm. 



Measurements. — Male (18739), length of carapace 15.7, wndth of 

 same 22.8, fronto-orbital mdth 14, width of front 7.3 mm. Male 

 type, length of carapace 18.6, width 26.8 mm. (Smith.) 



Habitat. — On muddy and stony shores, oyster beds, wharves and 

 submerged timber, and in eel-grass; sometimes in brackish water. 



Range. — From Massachusetts Bay to Florida (east and west 

 coasts), to Texas; St. Martin, West Indies; Bermuda. 



Material examined. — See table, pages 412 to 416. 



EURYPANOPEUS DISSIMIUS (Benedict and Rathbun) 



Plate 173, Figures 1 and 2 



Panopeus dissimilis Benedict and Rathbun, Proc. U. S. Nat. Mus., vol. 14, 

 1891, p. 366, pi. 20, fig. 4, pi. 23, fig. 1 (type-locality, Trinidad; type. Cat. 

 No. 15640, U.S.N.M.). 



Eurypanopeus dissimilis Rathbun, Ann. Inst. Jamiaca, vol. 1, 1897, p. 19. 



Diagnosis. — Lateral teeth prominent, well separated. Minor 

 cheliped strikingly small and rough, its fingers spooned. Color of 

 immovable fingers not spreading upward on palm. 

 Third abdominal segment of male not fused with 

 fourth. 



Description. — Resembling E. depressus; antero-lateral 

 notches larger (both deeper and wdder), second to fifth 

 teeth, inclusive, more prominent, second tooth more 

 dentiform, its outer margin nearly longitudinal, third, 

 fourth, and fifth teeth strongly hooked. Regional 

 grooves deeper than in depressus. Surface less rugose, figure ee— eury- 

 lacking a background of fine granulation. Two trans- f^'s^^T,™; 

 verse granulate lines on each protogastric region, men, enlarged. 

 diverging outwardly; one metagastric line, narrowly an^ratmun'" 

 interrupted at middle, forming a curve with a short 

 broken line on epibranchial region; further forward a long epi- 

 branchial line which ends just in front of inner end of ridge leading 



