208 University of California Publications in Zoology (Vou. 28 
Pugettia dalli Rathbun 
Plate 33, figure 5 
Pugettia dalli Rathbun, Proc. U. 8. Nat. Mus., 16, 232, 1893; Holmes, 
Oceas. Papers Calif. Acad. Sci., 7, 26, 1900; Rathbun, H. A. E., 10, 
173, pl. 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 hepatie 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; 64% to 30 fathoms (Rathbun). 
Remarks.—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, subeylindrical, unarmed; first pair usually much the longest. 
