1921] Schmitt: The Marine Decapod Crustacea of California 37 
Genus Urocaris Stimpson 
Rostrum prominently toothed above only. Carapace with an hepatic spine, with 
or without antennal spine, and without branchiostegal spine. Mandible without 
palp. 
Urocaris infraspinis Rathbun 
Urocaris infraspinis Rathbun, Proc. U. S. Nat. Mus., 24, 903, 1902; 
H. A. E., 10, 31, fig. 10, 1904. 
Fig. 22. Urocaris infraspinis, 9, X 3%; a, lateral view; b, dorsal view of 
anterior portion (from Rathbun, U. S. N. M.). 
Characters.—Rostrum about two-thirds as long as the carapace, pronouncedly 
convex above; armed with five to seven teeth, with one or two small teeth below 
near the tip; behind the rostrum there is a median gastric spine. Antennal and 
hepatic spines of good size; suborbital angle of carapace blunt. Ocular peduncles 
with a minute black ocellus above, towards the outside and beyond the limit 
of the cornea. Antennal scale much longer than the rostrum, with blade con- 
siderably exceeding the spine. 
Dimensions.—Type, ovigerous female: length of carapace and rostrum 6 mm., 
of rostrum 2.5 mm., of abdomen 15 mm. 
Type Locality—Gulf of California, in Concepcion Bay, Lower California 
(‘‘ Albatross’’). 
Distribution—San Diego Bay, California; Gulf of California (Rathbun). 
Family PoNTONIIDAE 
Rostrum laterally compressed and armed with teeth or depressed and unarmed. 
Antennules with one of the two flagella usually cleft a little distance from the tip. 
Mandible with incisor process but without palp. First pair of legs chelate and 
slender. Second pair chelate with one or both legs stouter or longer than first 
pair. 
