318 University of California Publications in Zoology — [Vou. 14 
improbable, therefore that Wood and Raymond confused this southern 
species with some other form. Dall and Bartsch (1909) found this 
species only at Santa Barbara, California. 
Odostomia inflata Carpenter 
Odostomia inflata Carpenter (1863), p. 658; Dall and Bartsch (1907), p. 
524, pl. 47, fig. 8; (1909), p. 201, pl. 23, fig. 7. 
Description.—This species was described by Dall and Bartsch as follows: 
‘*Shell ovate, white. Nuclear whorls decollated. Postnuclear whorls inflated, 
gently curved over the anterior two-thirds of the whorl between the sutures and 
more strongly so on the posterior third, this portion forming an evenly curved 
shoulder. Extreme summit of the whorls slightly flattened and narrow, render- 
ing the sutures well marked. Periphery of the last whorl subangulated. Base 
attenuated, rather suddenly contracted below the periphery, which gives the 
space between the periphery and the umbilical area a concave aspect. Entire 
surface marked by fine lines of growth and many fine, closely placed spiral 
lirations, five of which are a little stronger than the rest and divide the space 
between the sutures into subequal areas. There are about 30 of these threads 
upon the last turn between the summit and the periphery and about 60 on 
the base. Aperture very large, patulous anteriorly; outer lip thin at the edge 
but very thick within; columella decidedly curved, and revolute, reinforced to 
the very edge by the attenuated base, provided with a strong oblique fold at 
its insertion.’’ 
According to the original description, this species occurs in eavities 
in shells of Haliotis at the Farallon Islands and at San Francisco. 
The specimen was not found in the Survey collections, by Dr. Bartsch, 
who kindly examined all of the specimens belonging to this genus. 
Occurrence.—Neah Bay, Washington (Dall and Bartsch) ; Farallon 
Islands (Carpenter). 
EPITONIIDAE 
Epitonium Bolten 
Epitonium cerebricostatum (Carpenter) 
Scalaria cerebriscostata Carpenter (1863), p. 660; Wood and Raymond 
(1891), p. 57. 
Scala cerebriscostata, Arnold, R. (1903), p. 263. 
Description.—Arnold (1903) described this species as follows: 
“Shell turreted, thin; spire consists of eight convex whorls, each with 
fourteen to eighteen slightly oblique, sharp, thin, reflected, transverse varices; 
varices show a slightly coronated appearance at the shoulder; suture deep and 
distinct. Deflection 22 degrees. 
Some of the specimens have only slightly reflexed varices, and the amount 
of coronation varies in different individuals. ’’ 
