I 921 ] 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 subcylindrical, not ridged or grooved, and armed within with 

 small teeth. Merus of the ambulatory legs dilated and compressed much as in 

 Pachygi-apsu-s 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, ma;xillipeds, and striatums on the carapace are similar to 

 those of Paehygrapsus, 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 Ocypodidae 



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.) 



Ocypode, p. 277. 



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. 



