172 AMERICAN JOURNAL 



DESCRIPTIONS OF NEVT^ CALIFORNIA SHELLS. 



BY ROBERT E, C. STEARNS. 



OCINEBRA, Leach. 



c 



0. GRACILLIMA, Steams. PI. 14, fig. 14. "^^ 



0. gracillima, Stearns, Prel. Descr. May 18, 1871. 



Description. — Shell small, solid, ovately fusiform, rather slen- 

 der ; spire elevated, subacute: whorls six — seven; body whorl 

 about two-thirds of the length of the shell; upper portion of 

 whorls more or less angulated ; aperture ovate, about the same 

 length as the spire; outer lip thickened, internally white, with 

 four prominent denticles ; columellar lip somewhat excavated, 

 incrusted, with a purplish stain showing through the enamel ; 

 canal closed, moderately recurved ; surface covered with a slight 

 yellowish epidermis and numerous revolving costae of a whitish 

 hue, finely dotted with reddish brown, and the intercostal sulca- 

 tions near the edge of the outer lip with linear markings of the 

 same color; (one specimen shows brownish blotches upon the 

 middle of the body whorl.) This shell is abo longitudinally 

 nodosely ribbed, the ribs decreasing in prominence as the whorls 

 enlarge. 



Length, -50; width, -25 inch. 



Habitat, San Diego and vicinity, California. 



One specimen, an adult, dredged in (10 fathoms) San Diego 

 bay ; one adult and five juniors ten miles above San Diego ; also 

 one adult specimen at Dead Man's Island, near San Pedro. 



For this exceedingly pretty species we are indebted to Henry 

 Hemphill, Esq. 

 0. ciRCUMTEXTA, Steams. Plate 14, fig. 1^. ^ 



0. circuvitexta, Stearns, Prel. Descr. May 18, 1871. 



Description. — Shell ovate, solid, spire subacute, in some speci- 

 mens subturrited ; whorls five, convex or moderately flattened 

 above, upper whorls cancellated ; body whorl nearly three-fourths 

 of the length of the shell ; outer lip thickened, internally denti- 



