CLASS GASTROPODA 
141 
junioribus, crusta calcarea tenui obducta; anfractibus circit 2 l / 2 , ultimo; 
apertura ampla suborbiculari; columella angusta, arcuata. (Pallas.) 
Membranaceous, corneous, subpellucid, rugosely striate; whorls two 
and one-half, the last very large, expanded. (Tryon, Manual of Con- 
chology.) 
Type in Academy, St. Petersburg. Type locality, Arctic. 
Range. Bering Sea and the Okhotsk Sea. 
Velutina sitkensis A. Adams, 1851 
Proceedings, Zoological Society of London, 225. 
V. testa nigro-fusca, epidermide liris elevatis transversis confertis 
obtecta, longitudinaliter valde sulcata, sulcis subdistantibus; apertura ovli, 
intus sulcata; labro margine reflexo, nigro, incrassato; postice non-producto 
supra anfractum ultimum. (A. Adams.) 
Type in Museum Cuming. Type locality, Sitka, Alaska. 
Range. Bering Sea to Sitka, Alaska. 
Genus TORELLIA Loven, in Jeffreys, 1867 
Coquille etroitement perforee, renflee, globuleuse, converte d’un epi- 
derme poilu; spire courte, deprimee; ouverture arrondie; sinus basal a 
peine perceptible; labre mince, arque; columella concave, subtronquee a la 
base. (Fischer.) 
Type. Torellia vest it is Jeffreys. 
Distribution. North America and Europe. 
Torellia vallonia Dali, 1919 
Proceedings of the United States National Museum, 56:355. 
Shell small, the earlier part of it with a calcareous lining under a 
leathery periostracum, the later part entirely flexible; the general form 
and aspect that of Vallonia gracilicosta on a larger and somewhat less 
depressed scale; the color is yellowish-brown, with about four whorls, the 
nucleus missing, the rest of the shell with elevated axial lamellae, regularly 
disposed with much wider interspaces; the aperture entire, with a simple, 
not thickened, margin; umbilicus open, moderately wide. Diameter, about 
4; height, about 3 mm. (Dali.) 
Type in United States National Museum, No. 219130. Type locality, 
Nazan Bay, Atka Island, Aleutian, in 14 fathoms. 
Range. Known only from type locality. 
[743 1 
