252 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 97 
Chelifore 3-jointed, first joint about one-fourth as long as second. 
Second joint trumpet-shaped, with a fringe of spines around the 
distal rim, and a large spine on a low tubercle at about the middle of 
the joint. Chela globular, hidden in the end of the scape. 
Palpus 9-jointed, first, third, and fifth joimts subequal, second joint 
longer than fourth. Terminal joints diminishing in size, spinose. 
Oviger 10-jointed, fourth and fifth joints longest, Male: A cluster 
of spines at the end of the fifth joint, joints 6 to 8 spinose. Ninth 
joint without spines, tenth very small, with two hooklike terminal 
spines which may have minute denticulations. Female: Fifth joint 
without spines, joints 6 to 9 subequal, with two rows of spines on the 
ventral surface. Tenth joint as in the male. 
. Leg stout, flexed in preserved specimens. The first coxa of the 
male is more spiny than that of the female. The male genital pro- 
tuberance is fingerlike, about four times as long as its diameter, and 
bears a number of spines on its distal half which are about twice as 
long as the diameter of the process. The female process is shorter, 
broader, and without spines. Femur relatively free of dorsal spines, 
but with a series of large spines at about the middle of the joint, one 
on each side and one ventrally (not two spines along the ventral mar- 
gin as figured by Hilton). Tibiae armed with a series of tall spinous 
tubercles with long terminal spines. On the first tibia these tubercles 
are clustered at both ends, and on the second they are restricted to 
the proximal half of that joint. Tarsus very short, with slender 
spines ventrally. Propodus slightly curved, with three heavy basal 
spines, and 10 or 11 spines on the sole. Terminal claw about three- 
fourths as long as propodus, auxiliary claws very small, but distinct. 
Measurements.—As follows (leg flexed, not measured): Mm 
SLE eT COG, SSR sor a ee Ame yaa PREP Wes No ca. 2. 0 
NERY ee Se ape ey Re eS ee See Sa a ON st et eee 2. 0 
BECOME PALerel DEDCOSS, WIG... 2... oc oie wee se oe eee 2. 5 
momen: (rony @pnye) oF ke at ne Su ee 16 
Gomsee thee 2) See ee TO a oo ee, eee 1.6 
Remarks.—The differences between the abdomen of the holotype 
and South Carolina specimens are slightly exaggerated by the per- 
spective in the figures; but they are not of specific significance. 
Distribution.—As indicated in the key, this species is found on both 
Atlantic and Pacific coasts, at Tortugas and South Carolina on the 
Atlantic side of North America, and at the Galapagos and Baja Cali- 
fornia on the Pacific side of the continent. It is evidently a sub- 
littoral species. Hilton lists it from shore at the Galdpagos and at 
26 fathoms from San Francisquito Bay, Baja California. 
