1918 } Packard: Molluscan Fauna from San Francisco Bay 845 
ACTAEONIDAE 
Acteon Montfort 
Acteon punctocoelatus (Carpenter) 
Plate 41, figure 6 
Tornatella punctocoelata Carpenter (1863); p. 646. 
Rictaxis punctocoelata Dall (1871b), p. 136, pl. 15, fig. 12. 
Acteon punctocoelata Arnold, R. (1903), p. 189, pl. 9, fig. 6. 
Description.—Arnold (1903) has described this species as follows: 
“‘Shell small, elongate, elliptical, thin; spire small, conical; whorls three 
or four, convex; sculpture consists of numerous fine, spiral impressed lines; 
body-whorl slightly ventricose; aperture acutely angular above, rounded below; 
outer lip thin, simple; columella projecting beyond the line of the anterior 
margin, or truncate obliquely; one sharp, columellar plait.’’ 
Height, 5 to 8 mm. 
Occurrence—At stations D 5785 (1), D5786 (1), D5789 (2), 
ID) yk (a) 
Carpenter (1863) mentions this species as occurring at the Farallon 
Islands. It has been obtained by the Survey only in the vicinity of 
those islands. Dredged from a fine dark green sand bottom in 29 to 
46 fathoms. 
Range.—San Francisco to San Diego, California (Cooper). 
. ACTEOCINIDAE 
Acteocina Gray 
Acteocina cerealis (Gould) 
Plate 41, figures 8a and 8b 
Bulla (Tornatina) cerealis Gould (1853), p. 278, pl. 14, fig. 9. 
Tornatina cerealis, Pilsbry (1893), p. 188, pl. 50, figs. 39, 40; Arnold, R. 
(1903), p. 189, pl. 10, fig. 5. 
Description.—Pilsbry (1893) described this species as follows: 
“Shell cylindrical, with very short spire, light brown. Surface smooth 
except for curved growth-striae. Aperture long, narrow, somewhat widened 
below, the outer lip arched forward; columella rather straight, oblique, with a 
spiral fold.’’ 
Height, 3 to 10 mm. 
Occurrence.—At stations D 5785* (19), D 5786 (2), D 5788 (4), 
D 5789 (2). 
This southern species has not hitherto been recorded as far north 
as San Francisco. It is represented in the Survey collections by a 
few specimens from the waters west of the Golden Gate. Living 
specimens were dredged at depths ranging from 39 to 68 fathoms on 
bottoms composed of fine dark green sand. 
Range.—San Francisco to San Diego, California. 
