130 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Polinices recluzianus alta Dali, 1909 
U. S. Geological Survey, Professional Paper , 59:88. 
There is a variety alta Dali, with small narrow shell and exceptionally 
elevated. (Dali.) 
Type in United States National Museum. Type locality, California. 
Range. Monterey, California, to Catalina Island. 
Subgenus Polinices s.s. 
Polinices nanus Moller, 1842 
Index Molluscorum Groenlandiac , p. 7. Sars, Mollusca regionis arctica Norvegiac, 
PI. 21, fig. 16. 
Testa globosa, imperforata, alba, anfr. 3j^; spira parum elata; sutura 
lineari; peristomate disjuncto. Operculo corneo, tenui. L. 3'" .R. (Moller.) 
Shell globose, imperforate, white, with three and one-half whorls, spire 
little elevated; suture linear, peristome disjointed, operculum corneous, 
thin. (Translation.) 
Type in Zoology Museum, Copenhagen? Type locality, Greenland. 
Range. Arctic Ocean to Aleutian Islands, and in deeper water near 
San Diego, California; also Greenland. 
Genus SINUM Bolten, 1798 
Shell ear-shaped, with minute spire and very large aperture, externally 
with revolving striae, color usually white, with sometimes a thin corneous 
epidermis. Operculum minute, horny, subspiral. 
Type. Sigaretus neritoides Linnaeus. 
Distribution. United States, West Indies, China, Peru, Japan. 
Fossil, Eocene. 
This is the description of genus Sigaretus, which is equal to Sinum 
Sinum californicum I. S. Oldroyd, 1917 
Plate 92, figs. 13, 14 
Nautilus, 31:13. 
Shell white, convex, spirally striate above, with epidermis of a rusty 
yellow; a thin columellar callus reflected nearly over the umbilicus showing 
only a faint trace of umbilicus; interior snow-white. This has been called 
Sigaretus debilis Gould, but it is not like the specimens from Lower Cali¬ 
fornia. It differs from S. concavum in not being as convex, and the 
interior being white, and the early whorls are much smaller; and from 
[ 732 ] 
