CLASS GASTROPODA 
149 
close to the suture, the outer lip is thickened but not internally lirate; 
the inner lip smooth; the canal is short, wide, and hardly differentiated 
from the rest of the aperture. Height of shell, 9; of last whorl, 6; 
diameter, 3 mm. (Dali.) 
Type in United States National Museum, No. 55285. Type locality, 
San Diego, California. 
Range. San Diego, California, to Scammons Lagoon, Lower Cali¬ 
fornia. 
Cytharella pomara Dali, 1919 
Proceedings of the United States National Museum, 56:305. 
Shell small, fusiform, solid, with six moderately convex whorls, the 
nucleus small, subglobular, smooth (slightly decorticated) ; axial sculpture 
of (on the penultimate whorl, 11; on the last whorl, 9) prominent, 
slightly-shouldered ribs with wider interspaces, the ribs undulating the 
appressed suture; spiral sculpture of close-set alternated threads over the 
whole surface except between the shoulder and the suture, which is arcu- 
ately striated by the incremental lines; aperture narrow, straight, the anal 
sulcus moderate, the outer lip thickened, simple, the inner lip with a wash 
of enamel; the canal hardly differentiated. Height of shell, 7; of aper¬ 
ture, 4; diameter, 3 mm. (Dali.) 
Type in United States National Museum, No. 152746. Type locality, 
San Pedro, California. 
Range. Known only from type locality. 
Cytharella densilineata Dali, 1920 
Paleontology of San Pedro, California. 
New name for Mangilia striosa in Paleontology of San Pedro, Califor¬ 
nia, not C. B. Adams. 
Shell small, elongate-fusiform; spire much elevated; apex acute; 
whorls six, subangular, with numerous fine, slightly wavy transverse 
ridges, which become obsolete at the sutures; spiral sculpture nearly 
obsolete; suture very deeply depressed, giving a rather frail appearance 
to the spires; aperture narrow, elliptical, tapering anteriorly to a short, 
truncated canal; posterior sinus small; outer lip thin, simple, arcuate; 
columella smooth; straight on anterior portion. Long., 9.2; lat., 3 ; body- 
whorl, 5.2; aperture, 4 mm. (Arnold.) 
Type in United States National Museum? Type locality? 
Range. San Pedro, California, to Gulf of California. Fossil: Pleis¬ 
tocene, San Pedro, San Diego, California. 
[1491 
