208 University of California Publications in Zoology [Vol. 23 



Pugettia dalli Rathbun 



Plate 33, figure 5 



Pugettia dalli Rathbun, Proc. U. S. Nat. Mus., 16, 232, 1893; Holmes, 

 Oecas. Papers Calif. Aead. Sci., 7, 26, 1900; Rathbun, H. A. E., 10, 

 173, pi. 2, figs. 1, la, 1904. 



Characters. — Carapace subtriangular, tuberculated ; tubercles on gastric region 

 much as in P. richii but anterior and posterior tubercles are small and obsolescent; 

 a large tubercle on the cardiac region and one on the intestinal; branchial regions 

 without areolations; there is an upturned spine on the posterolateral margin; on 

 the hepatic region there is a slender transverse spine, curved slightly forward. 

 Rostrum similar to that of P. richii but more slender, widely divergent. Preocular 

 tooth acuminate; postocular tooth is thin, obtuse, its upper surface flattened and 

 inclined downward at an angle of about forty-five degrees. Ischium of maxillipeds 

 grooved. Chelipeds of male large; merus with an irregular carina on upper and 

 lower margins; carpus strongly carinated on inner and upper margins and irreg- 

 ularly ridged on the outer side; hand large, wider than in P. richii, upper edge 

 acute, fingers strongly gaping at base, meeting only at tips, a tooth on movable 

 one near base; chelipeds of female smaller, hand narrower, fingers not gaping at 

 base. Ambulatory legs much more slender than in specimens of P. richii of 

 equal size. 



Dimensions. — Type, male: length of carapace 11 mm., width without spines 

 6.5 mm., length of cheliped 13 mm., width of hand 3.3 mm. 



Type Locality. — Southern California. 



Distribution. — From San Pedro, California, to San Geronimo Island, Lower 

 California; 6% to 30 fathoms (Rathbun). 



Bemarks. — This species is much smaller than P. richii, which is found in the 

 same localities, and it is at once distinguished from the latter by the hepatic 

 region; in P. richii it is dilated in two flattened, horizontal spines, while in P. dalli 

 it is furnished with one slender spine and a flattened obtuse oval tooth not hori- 

 zontal (Rathbun). 



Genus Chorilia Dana 



Carapace pyriform, inflated, and spiny. Rostrum composed of two long, 

 slender, straight, cylindrical spines, diverging from the base. Basal antennal joint 

 large, furnished distally with a spine; flagellum usually exposed and visible from 

 above at the sides of the rostrum. Preocular spine prominent, acute; postocular 

 acute, deeply cupped on anterior face, and without hairs. Ambulatory legs 

 elongated, subcylindrical, unarmed ; first pair usually much the longest. 



