CLASS GASTROPODA 
83 
Cingula kelseyi Bartsch, 1919 
Proceedings of the United States National Museum , 41:290; fig. 3. 
Shell small, very slender, cylindro-conic, translucent, white. Nuclear 
whorls two, strongly rounded, smooth. Post-nuclear whorls rather high 
between the sutures, well-rounded, very narrowly shouldered at the summit 
and lightly constricted a little anterior to the summit, marked by fine lines 
of growth and exceedingly fine, spiral striations. Suture moderately con¬ 
stricted. Periphery of the last whorl and the long base gently rounded, 
marked like the spire. Aperture very oblique, subcircular; posterior angle 
obtuse; outer lip reflected at the edge; inner lip moderately long, reflected; 
parietal wall covered with a thick callus, which is also reflected, but free 
at the edge, thus giving the entire aperture a dished appearance. Length, 
1.9; diameter, 0.6 mm. (Bartsch.) 
Type in United States National Museum, No. 111369. Type locality, 
Coronado Island, San Diego, California. 
Range. San Diego, California, and to the South Coronado Island. 
Described as Nodulus. 
Cingula kyskensis Bartsch, 1911 
Proceedings of the United States National Museum, 41:291; fig. 4. 
Shell elongate-oval, thin, translucent, yellow. Nuclear whorls one and 
one-quarter, smooth, well-rounded, scarcely differentiated from the suc¬ 
ceeding turns. Post-nuclear whorls appressed at the summit, with a some¬ 
what concavely sloping shoulder which extends over the posterior third 
between the sutures. Entire surface marked by numerous fine lines of 
growth only, surface apparently covered with a thin epidermis which has 
the finely cracked appearance frequently seen on a surface covered with 
varnish. Suture strongly constricted. Periphery and the rather short 
base of the last whorl well-rounded. Aperture very large, very broadly 
oval, decidedly oblique; posterior angle obtuse; outer lip slightly expanded ; 
inner lip decidedly curved and reflected; parietal wall covered with a thick 
callus which is disjunct at the edge and renders the peritreme complete. 
Length, 2.3; diameter, 1.1 mm. (Bartsch.) 
Type in United States National Museum, No. 161105. Type locality, 
Kyska Harbor, Aleutian Islands, Alaska. 
Range. Kyska and Atka Islands, Aleutians. 
Cingula palmeri Dali, 1919 
Proceedings of the Biological Society of Washington, 32:251. 
Shell minute, translucent brownish with a blunt apex and four well- 
rounded whorls; the suture rather deep, the surface smooth except for 
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