THE CANCROID CRABS OF AMERICA 445 



Description. — Upper surface of carapace rough with scalelike gran- 

 ules, which are sharper and higher on the anterior lateral arch. The 

 granules of carapace and chelae bear hairs while many much finer 

 hairs arise between them. Front bent obhquely down, a narrow 

 transverse ridge at the bend, nearly parallel with the edge; margin of 

 frontal lobes nearly straight, sloping backward a little from the 

 median V-shaped notch; a small rectangular tooth at outer end. 

 Upper orbital margin minutely granulate or denticulate, lower mar- 

 gin also denticulate, a large triangular tooth at inner angle, a large 

 outer sinus. Outer orbital tooth and next antero-lateral tooth at 

 some distance, very small but plainly marked and acute; below and 

 between them a sharp subhepatic tubercle; the last three antero- 

 lateral projections are triangular spine-pointed teeth, the last one 

 more or less smaller than the others. Endostomial ridge not nearly- 

 reaching epistome. 



The outer-upper surface of the wrist is entirely covered with spi- 

 nules or sharp granules and has a transverse distal groove, and twa 

 sharp spines on the inner edge, the one at the inner angle longer than 

 any other. Upper surface of hand spinulous in part, more so in minor 

 than major chela and in the young than full grown; outer surface in 

 both sexes entirely smooth and bare in the old, but with a narrow 

 strip on upper and proximal portion which is spinulous. Minor 

 manus with a dorsal groove, fingers each with two deep grooves both 

 inside and outside. Grooves less evident on the major chela, which 

 is much the stouter. Ambulatory legs very slender, spinulous. Male 

 abdomen with third, fourth, and fifth segments fused. 



Color. — Male (in formalin), pale buff on upper side of carapace and 

 legs; chelae yellowish or salmon on the palm, with a white patch pre- 

 ceded by a yellow one at base of claws, which were umber-brown. 

 (Verrill.) 



Measurements. — Female (20508), length of carapace 8.9, width of 

 same 12.8, fronto-orbital width 8, width of front 4.1 mm. 



Range. — From Bahamas and Florida Keys to the Abrolhos IslandS;^ 

 Brazil; Bermuda. 



Material examined. — Bermuda; 1898; A. E. Verrill and party;: I 

 male, 1 female (P.M.Y.U.). 



Hawk Channel, Florida; 4% miles W. by N. of Elbow Reef beacon;: 

 2% fathoms; barry S.; 20.5° C; February 19, 1903; station 7467, Fish 

 Hawk; I female (60779). 



Green Turtle Cay, Bahamas; 1897; E. A. Andrews; 2 females 

 (20508), types of Pilumnus andrewsii. 



No Name Key, Florida; banks, low tide; 1885; H. Hemphill; t 

 female (19891). 



Caracas Bay, Curagao; 1920; C. J. van der Horst; in coral. May 5^ 

 1 male (56896); in sponge, May 10, 1 young female (Amsterdam 

 Mus.). 



