1918] = Packard: Molluscan Fauna from San Francisco Bay 341 
fathoms from bottoms that are predominantly sandy. Not associated 
at any haul with the preceding species. 
Range—San Francisco; Santa Cruz, California, to Lower Cali- 
fornia (Dall). 
Olivella pedroana (Conrad) 
Strephona pedroana Conrad (1855), p. 327, pl. 6, fig. 51. 
Olivella boetica Carpenter, Tryon (1883a), p. 71, pl. 17, figs. 28-81, 34. 
Olivella pedroana, Arnold, R. (1903), p. 221. 
Description.—The following is the description of this species as given by 
Tryon (1883): 
‘«Spire moderately elevated, sharp-pointed, body-whorl oval; red-brown or 
gray, fasciculated upon a white band at the suture; body-whorl maculated or 
with zigzag markings, and sometimes a white central band, fasciole white, tip 
of spire frequently dark-tinted.’’ 
Height, 3 to 13 mm. 
Occurrence.—At stations D 5785 (14), D 5786 (9, 3), D 5787 (1), 
DEY AS] @Z 2 rm Oty Ao) i @ an 
This is the first known record of this species from the vicinity of 
San Francisco. It was dredged by the ‘‘Albatross’’ only in the 
vicinity of the Farallon Islands at depths ranging from 29 to 40 
fathoms from a bottom composed of dark green sand. 
Range.—Strait of Juan de Fuca, Washington, to San Diego, Cali- 
fornia (Cooper). 
CANCELLARIIDAE 
Cancellaria Lamarck 
Cancellaria crawfordiana Dall 
Plate 39, figures 9a and 9b 
Cancellaria crawfordiana Dall (1891), p. 182, pl. 6, fig. 1; Keep (1911), 
p- 137, fig. 110. 
Description.—Dall (1891) originally described this species as follows: 
‘Shell elongated, slender, with six moderately rounded whorls, reticulately 
sculptured and covered when fresh with a rather coarse brown fibrous epi- 
dermis; whorls transversely sculptured with from fourteen to twenty narrow, 
clear-cut, moderately elevated, even, slightly flexuous ribs, crossing the whorls, 
but less prominent anteriorly and separated by wider interspaces. The only 
other transverse sculpture is of lines of growth; spiral sculpture of (between 
the sutures nine to ten) narrow, flat-topped, strap-like elevated cingula, with 
wider excavated interspaces, rather uniformly spread over the whorl, but more 
distant near the shoulder, and on the earlier whorls somewhat sharper and 
relatively more prominent. Between the cinguli, and rarely on them, are a 
few obscure, revolving lines. On the canal the cinguli become rounded, smaller, 
and obseure. The surface under the dehiscent epidermis is polished pale brown, 
, 
