FAMILY ZONITID.'E 37 



Range. — Greenland. 



This species is more like the V. bcryllina of Europe than ihc 

 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. 35) 

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

 1, p. sS. rina augcliciv, \. 



Vitrina limpida Gould. 



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



not of Miiller, 1774. 

 Vitrina limpida G0VV.U, in Agassiz, Lake Superior, p. 243, 1850. — Morse, 



Journ. Portland Soc. Nat. His., I, p. 11, pi. v, fig. 17, 1864. — Binnky, 



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

 Vitrina anitricatia Pfeiffer, Proc. Zool. Soc. Lond., for 1S52, p. 156; 



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



^_^ Range. — Central New York and northward, from 



7J^ ^<5 ^*N New Brunswick to Alberta and Hudson Bay. 



^ — ^ Pittsburgh, Pennsylvania. Manitoba at Carberry 



Fig. 26. Vit- ;j,^^] Lake of the Woods ; Red Deer and Laggan in 



rina limpida ^^Iberta ; Moose Factory ! Tames Bay ; Norway I louse, 

 (Maine), \. . , , ■' "^ 



in damp woods. 



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, notn. nov. 



Vitrina pfcifferi Newcomb, Proc. Cal. Acad. Sci., 11, p. 92, 1861. — Tryon, 

 Am. Journ. Conch., 11, p. 244, pi. iii, fig. 3, 1866. — Binney, Land and 

 Fw. Sh. N. Am., i, p. 28, fig. 26, 1869. Not V. pfciffetd 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 ! L^nalga ! Rooluk ! and L^nalaska ! 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 exilis, 

 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. 



