262 University of Califorma Publications in Zoology {| Vou. 14 
Occurrence.—At stations D 5785 (1), D 5790* (17), D 5791 (1). 
Wood and Raymond (1891) list this species from San Francisco. 
A single living specimen was dredged near the Farallon Islands by 
the Survey in 33 fathoms on a bottom composed of fine dark green 
sand. 
Range.—Puget Sound, Washington, Todos Santos Bay, Lower 
California (Dall). 
Entodesma Philippi 
Entodesma saxicola (Baird) 
Lyonsia saxicola Baird (1863), p. 70. 
Entodesma saxicola, Carpenter (1863), p. 638. 
Lyonsia (Entodesma) saxicola, Wood and Raymond (1891), p. 55. 
Description.—The following description is adapted from the original deserip- 
tion as given by Baird (1863): 
Shell thin, brittle, ovate-oblong shape, gibbous in the center, produced 
anteriorly, compressed posteriorly and gaping.’’ Beaks large, incurved. Ventral 
margin flexuous and gaping. Epidermis finely striated, of an olive color. 
Length, 45 mm. 
Occurrence—At stations D 5845 (f.), D 5846 (2). 
This species has been reported from the Farallon Islands by Car- 
penter (1863) and from San Francisco by Wood and Raymond (1891). 
Shells of this form were obtained by the Survey at two stations within 
the Golden Gate in 33 and 45 fathoms. The two weathered shells from 
station D 5846 were found associated with Kellia laperousi and Petri- 
cola carditoides as a nestler in pholadid borings. 
Range.—Aleutian Islands (Dall.) to San Diego, California 
(Oreutt). 
POROMYACEA 
CUSPIDARIIDAE 
Cuspidaria Nardo 
Cuspidaria californica Dall 
Plate 20, figure 3 
Cuspidaria californica Dall (1886), p. 296. 
Description.—This species was originally described as follows: 
“Shell differing from C. pectinata by its smaller size and proportionally 
greater length; larger number of ribs (16-20, while pectinata averages 12-14); 
its straighter, longer rostrum with but two strong radiating lirae extending 
to the lower extreme (pectinata has none, or only several fine ones near the 
body of the valve); its less inflated shape and paler, more delicate epidermis. 
