138 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
wrinkles. It is attached to the body only by a small area at the edge near 
the nucleus. There is no indication of a periostracum, and the cartilagi¬ 
nous shell is nearly transparent. (Dali.) 
Type in United States National Museum, No. 215162. Type locality, 
St. Paul Island, Bering Sea. 
Range. Known only from type locality. 
Family VELUTINIDAE 
Genus VELUTINA Fleming, 1822 
Shell thin, with a velvety epidermis; spire small; suture deep; aperture 
very large, rounded; peristome continuous, thin. No operculum. (Wood¬ 
ward, Manual of the Mollusca. 
Type. Velutina laevigata Linnaeus. 
Distribution. Britain, Norway, North America, Icy Sea to Kam¬ 
chatka. Fossil, Triassic, Cretaceous, Pliocene. 
Velutina cryptospira Middendorff, 1849 
Beitrage su einer Malacologia Rossica, pt. 2, 106. Sibirische Rcise, PI. 25, figs. 8, 9, 10. 
Tryon, Manual of Conchology, 8:67; PI. 27, figs. 45-47. 
Testa transversim ovata, subauriculata, cartilagineo-coriacea, tenui (ex- 
sixxata, membranacea et tenuissima fit) fusca; spira laterali, subemar- 
ginali immersa et plane inconspicuus; anfractu ultimo maximo; apertura 
ampla, orbiculari-ovata; columella angusta, subacuta, interdum canaliculo 
obsoletissimo submarginata. ( Middendorff.) 
Shell narrower, more elongated than V. laevigata , the columellar lip 
forming an angle with the outer lip below; coriaceous, or with a very 
slight calcareous deposit. Length, 10 mm. (Tryon, Manual of Conchology.) 
Type in Academy, St. Petersburg. Type locality, Gulf of Alaska. 
Range. Known only from type locality. 
Velutina granulata Dali, 1919 
Proceedings of the United States National Museum, 56:355. 
Shell small, white, naticoid, covered with a thin yellowish dehiscent 
periostracum, with a minute smooth nuclear and three subsequent rounded 
rapidly expanding whorls; suture distinct, not appressed; sculpture of 
quite evident but not elevated incremental lines and very minute granu¬ 
lation over the whole surface; aperture ovate, produced, simple; axis 
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