274 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Type in museum of the Boston Society of Natural History. Type 
locality, Puget Sound. 
Range. Port Etches, Alaska, to San Diego, California. 
Columbella casciana Dali, 1919 
Proceedings of the United States National Museum, 56: 35. 
Shell small, yellowish, acute, with a three-whorled smooth nucleus 
beginning with a very minute apex and five flattish subsequent whorls; 
suture distinct, minutely channeled; axial sculpture of faint incremental 
lines; spiral sculpture of very faint striae on the whorls behind the 
periphery, and a few stronger grooves near and on the canal; base sub- 
angular at the periphery, flattened in front; aperture narrow, simple, body 
slightly glazed, pillar short with a strong keel at its anterior border; canal 
short, deep. Height of shell, 9; of last whorl, 6; of aperture, 3.5 ; diameter, 
4 mm. (Dali.) 
Type in United States National Museum, No. 209456. Type locality, 
United States Fish Commission Station 4322, off La Jolla, San Diego, 
California. 
Range. Known only from type locality. 
Columbella callimorpha Dali, 1920 
Proceedings of the United States National Museum, 56 :330. 
Shell small, yellowish, with brown mottlings under a thin brownish 
periostracum, with about five whorls; including a small smooth nucleus; 
suture obscure, whorls only slightly convex on the spire; surface smooth 
except for a few spiral striae on the canal; aperture narrow, with a 
rather wide commissure at the posterior junction of the lip and body; outer 
lip slightly thickened, with four or five denticles on the inner face; body 
polished, pillar short; canal short and wide. Height of shell, 5; of last 
whorl, 3.5; diameter, 2.5 mm. (Dali.) 
Type in United States National Museum, No. 271491. Type locality, 
San Diego, California. 
Range. San Diego Bay, California, to Magdalena Bay, Lower Cali¬ 
fornia. 
Subgenus Astyris H. & A. Adams, 1853 
Columbella rosacea Gould, 1840 
American Journal of Science, 38:19 7; Invertebrates of Massachusetts, 357; text 
fig. 195. 
Testa parva, conico-acuta, alba, rosaceo, tincta; anfractibus sex, 
plano-convexis, spiraliter lineolatis; apertura spira breviore; columella 
arcuata, planulata. Long., 3/10; lat., 3/20 poll. (Gould.) 
[ 274 ] 
