FAMILY ZONITID^E 37 



Range. — Greenland. 



This species is more like the V. beryllina of Europe than the 



American species. The latest data given by Posselt 



indicate that it is not found in Iceland. Binney has 



given an enlarged illustration of this species (fig. 25) 



in his Land and Fresh Water Shells of North America, Fig. 25. Vit- 



„o rtna angelica?, \. 



I, p. 20. 6 



Vitrina limpida Gould. 

 Vitrina pellucida De Kay, Zool. N. Y. Moll., p. 25, pi. Ill, fig. 42, 1843; 



not of Miiller, 1774. 

 Vitrina limpida Gould, in Agassiz, Lake Superior, p. 243, 1850. — Morse, 



Journ. Portland Soc. Nat. His., I, p. n, pi. v, fig. 17, 1864. - Binney, 



Land and Fw. Sh. N. Am., 1, p. 27, figs. 23, 24, 1869. 

 Vitrina americana Pfeiffer, Proc. Zool. Soc. Lond., for 1852, p. 150; 



Conch. Cab., ed. 11, Vitrina, p. 9, pi. I, figs. 22-25, 1854. 



Range.— Central New York and northward, from 



^Q C?^ New Brunswick to Alberta and Hudson Bay. 



^ ^^_y Pittsburgh, Pennsylvania. Manitoba at Carberry 



Fig. 26. Vit- an d Lake of the Woods ; Red Deer and Laggan in 



rina limpida Alberta ; Moose Factory ! James Bay ; Norway House, 



{ ainej, T . .^ j am p WOO( Js. 



This species has been reported from the Rocky Mountain region by 

 Ingersoll, but I regard his specimens so identified as varieties of V. 

 alaskana. 



Vitrina alaskana Dall, nom. nov. 



Vitrina fifeifferi Newcomb, Proc. Cal. Acad. Sci., II, p. 92, 1861.— Tryon 

 Am Journ. Conch., II, p. 244, pi- HI, fig. 3. 1866. -Binney, Land and 

 Fw. Sh. N. Am., 1, p. 28, fig. 26, 1869. Not V. pfeiffen Deshayes, in 

 Fer., Lima9ons, 1822. 

 Range. — New Mexico, Utah, Colorado, central California, all at 



considerable altitudes, and northward. 



Nanaimo, Vancouver Island, B. C. ; Muir Inlet, Alaska ! St. Paul, 



Kadiak Island ! Popof and Unga Islands, of the Shumagin group ! 



Akutan ! Unalga ! Rooluk ! and Unalaska ! of the Aleutian chain ; St. 



Paul! and St. George Islands, Bering Sea, Alaska, in tall grass of 



bluff fifty feet above the sea ! 



This species has been referred to as fellucida, limpida and exihs, 



and when fully grown under favorable conditions the shell may reach 



10 mm. in major diameter, though most of the specimens as collected 



are considerably smaller. The shell is translucent, with a marked 



greenish tinge, and not over three whorls. It is flatter than limpida, 



