1921] Schmitt: The Marine Decapod Crustacea of California 277 
and inflated; the upper margin of the palm is broadly rounded, but bears a fine 
ridge; a very fine ridge on the lower side of the outer surface extending upon 
the pollex; fingers subeylindrical, not ridged or grooved, and armed within with 
small teeth. Merus of the ambulatory legs dilated and compressed much as in 
Pachygrapsus crassipes, with the upper margins acute and ending in a tooth a 
little behind the supero-distal angle; the infero-distal angle, in all but the last 
pair, is dentate; carpal joints with a few small spines near the distal end of 
the upper margin; propodi with the sides strongly convex and the upper and 
lower margins spiny; dactyls rather narrow, shorter than the propodi, strongly 
spinose above and below, and terminating in slender claws. The abdomen in 
the male is widest at the third segment, behind which it tapers to the tip, the 
sides converging more rapidly towards the posterior end; first segment much 
longer than the second; third segment about as long as the fourth, the sides 
strongly convex; fifth segment scarcely longer than the fourth and shorter than 
the sixth; last segment triangular, acute (Holmes). 
Type Locality—San Diego, California. 
Remarks.—This species is described from a single dried and somewhat imper- 
fect specimen contained in the Museum of the University of California. The form 
and arrangement of the antennae and antennules could not be determined nor 
could I make out whether or not the inferior orbital lobe was in contact with the 
front. The front, legs, maxillipeds, and striations on the carapace are similar to 
those of Pachygrapsus, but the character of the orbits separates it from that genus 
as well as all the other genera of the Grapsidae (Holmes). 
This species has not been found since original specimen was taken and 
described. No measurements were given. 
Family OcypopIDAE 
Carapace square or rounded, more or less convex; lateral margins generally 
without teeth; front moderately or very narrow, more or less depressed or bent 
downward; orbits transversely lengthened, eye-stalks usually very long. Third 
maxillipeds almost or quite close the mouth. 
KEY TO THE CALIFORNIA GENERA OF THE OCYPODIDAE 
I. Eye-stalks moderately stout; corneae elongate, subterminal, eye-stalk project- 
ing beyond them in a short process. Chelipeds in male subequal; fingers 
with truncate ends. (Only California record, a doubtful one, is from San 
Francisco Bay.) Ouuode peat. 
II. Eye-stalks slender; corneae terminal. Chelipeds in male extremely unequal; 
fingers with pointed tips. Uca, p. 278. 
Genus Ocypode Fabricius 
Carapace squarish; antennules folded longitudinally. Eye-stalks large, mod- 
erately stout; cornea large, covering much of lower surface of eye-stalk, usually 
subterminal and reaching toward base of eye-stalk. No flagellum on exopodite of 
outer maxilliped. Chelipeds well developed, unequal but not noticeably different 
on either side or in either sex. 
