76 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Melanella oldroydi Bartsch, 1917 
Plate 41, figs. 5, 6, 7 
Proceedings of the United States National Museum, 53:309; PI. 36, figs. 5, 6, 7. 
Shell rather broadly elongate-conic, bluish-white, in the living form, 
yellowish-white in the fossil, polished, marked by exceedingly fine lines of 
growth only. The first three whorls well-rounded, separated by a mod¬ 
erately impressed suture; the succeeding flattened, separated by a feebly 
defined suture. Periphery of the last whorl weakly angulated. Base short, 
well-rounded. Aperture oval; posterior angle acute; outer lip angulated 
at the junction with the basal lip and slightly protracted at the angle; inner 
lip short, curved, strongly reflected and appressed to the base posteriorly; 
parietal wall covered with a thick callus. Length, 9.2; diameter, 3 mm. 
(Bartsch.) 
Type in United States National Museum, No. 109641. Type locality, 
San Pedro, California. 
Range. San Pedro, California, to Point Abreojos, Lower California. 
Fossil: Pliocene and Pleistocene—Santa Monica to San Quentin, and Sand 
Rock, Deadman Island, San Pedro. 
Melanella randolphi Vanatta, 1899 
Plate 40, fig. 4 
Proceedings, Philadelphia Academy of Natural Sciences, 256; PI. 11, figs. 13, 14, 1899. 
Shell smooth, rather slender, shining, bluish-white when empty, but 
when the animal is dried in, the spire is orange-colored above, pink in the 
middle, with sometimes a slight yellowish band on the body whorl; opaque; 
outlines of the spire straight, conical. Apex blunt, rounded, of moderate 
size, suture impressed; no varices. Seven or eight whorls, the body whorl 
ovate, whorls of the spire a little convex. Aperture ovate, outer lip sloping 
to the right, nearly straight, in profile it is moderately arched forward be¬ 
low and sometimes retracted very slightly above. Columella slender, con¬ 
cave below ; above, forming an angle with the convex parietal wall; parietal 
callus very thin. Alt., 6; diameter, 2.3; length of aperture, 2.1; breadth, 
1.1; diameter of apex, 3 mm. (Vanatta.) 
Type in Philadelphia Academy of Natural Sciences, No. 73729. Type 
locality, Unalaska, Alaska, under stones. 
Range. Aleutian Islands to Puget Sound, Washington. 
Melanella californica Bartsch, 1917 
Plate 40, fig. 1 
Proceedings of the United States National Museum, 53:313; PI. 37, fig. 1. 
Shell elongate-conic, straight, polished, marked by exceedingly fine 
lines of growth and scarcely perceptible microscopic spiral striations, 
[ 374 ] 
