1918] Packard: Molluscan Fauna from San Francisco Bay 335 
Murex (Ocinebra) interfossa (Carpenter) 
Plate 37, figures la and 1b 
Ocinebra interfossa Carpenter (1863), p. 663; Tryon (1880), p. 131, pl. 39, 
fig. 484; Arnold, R. (1903), p. 255. 
Description.—Tryon (1880) described this species as follows: 
‘¢Shell narrower and more shouldered than the last species, the lattice of 
revolving lirae and longitudinal ribs coarser and more elevated; canal short, 
closed.’’ 
Height, 8 mm. 
Occurrence.—At station D 5770 (1). 
This species has been reported by Carpenter from the Farallon 
Islands and by Wood and Raymond from San Francisco. A single 
shell was dredged by the Survey within the middle division of the 
bay in 5 fathoms. 
Range.—Sitka, Alaska, to San Diego, California (Cooper). 
Murex (Ocinebra) lurida (Middendorff) 
Plate 37, figures 4a and 4b 
Tritonium luridum Middendorff (1847-1849), p. 150, pl. 4, figs. 4, 5. 
Ocinebra lurida, Carpenter (1863), p. 668; Wood and Raymond (1891), 
p- 57; Arnold, R. (1903), p. 256. 
Description.—This species was described by Arnold (1903) as follows: 
“Shell of medium size, fusiform; whorls six, convex, slightly angulated near 
posterior margin; upper whorls with several transverse ridges; surface orna- 
mented with numerous rounded, raised lines; suture deeply impressed, distinct; 
body-whorls not extraordinarily ventricose; aperture subovate; outer lip thick- 
ened, denticulated; inner lip inerusted; columella widened; umbilicus subper- 
forate; canal narrow, sometimes with overgrowing lips.’’ 
Height, 10 to 14 mm. 
Occurrence.—At stations D 5770 (1), Bonita Point* (3, 1). 
Carpenter and subsequent writers lst this species as occurring in 
the vicinity of San Francisco. It is represented in the Survey col- 
lections by a single living specimen dredged near Bonita Point at a 
depth of 5 fathoms, and by four specimens obtained from the near-by 
rocky shore. 
Range.—Sitka, Alaska, to San Pedro, California. 
Urosalpinx Stimpson 
Urosalpinx cinereus (Say) 
Plate 37, figures 8a and 8b 
Urosalpinz cinereus Say (1822), p. 236. 
Urosalpinx cinereus, Stearns (1899b), p. 112; Tryon (1880), p. 152, figs. 
487, 489, and 493. 
