EASTERN PROVINCE NORTHERN REGION SPECIES. 179 



whorls 3, rapidly iucreasiiig, tbe last broad below, flattened ; aperture 

 obliquely oval, the termiDation of the peristome membranous, i,„;.i72. 

 that of the columella slightly reflected, giving the impression of 

 a punctiform perforation. Greater diameter 7^, lesser 5™""; 

 height, 3™™. 



Allied to Y. peUucida^ but with less broad spire and differing y-exiUs. 

 in the perforation. (Morelet.) 



Vitrina exilis, Morelet, Jonrn. de Conch., vii, 8. — Pfeiffer, Mon. Hel. Viv., iv, 

 799 (1859).— W. G. Binney, T. M., t. 



A Kamtschatka species. Petropaulauski (Dall); Ounalaska (Cooper, 

 as pellucidaf Am. Jouru. Couch., V, 200). 



Jaw and lingual membrane as usual in the genus, the former with 

 ends somewhat recurved, as in Zonites arboreus. Vitrina exilis has 

 about 37-1-37 teeth on its lingual membrane, with 7 perfect laterals. 

 I have given in Terr. Moll., V, 138, Plate II, Fig. B, one central, lat- 

 eral, and marginal. 



SPURIOUS species of vitrina. 



Vitrina latissima, Lewis, is a Viirinizonites. 



fossil species op vitrina. 

 Fiti-ina obliqua, Meek and Hayden, Proc. Phila. Acad. Nat. Sci., 1857, 134. 



ZOWITES. (See p. 201.) 



Zonites Fabricii, Beck. 



Shell subimperforate, conical, thin, lightly striated, pellucid, red- 

 dish ; spire conical, rather acute ; suture profound ; whorls 

 6, convex, narrow, the last wider, rather convex at base, im- 

 pressed at the center ', aperture vertical, widely lunar ; peri- 

 stome simple, acute, its columellar extremity reflected 



Z. Fabricii, 



above, simulating a perforation. Greater diameter 4, lesser enlarged. 

 3^™™ ; height, 3™"". 



Selix Fabricii, Beck, Ind., 21 (no descr). — Muller, Ind. Moll. Gr., 4 (1842).— Pfeif- 

 fer, Zeit. f. Mai., 1^48, v, 90; Mon. Hel. Viv., iii, 32.— Reeve, Cou. Icon., 

 No. 1459.— \V. G. Binney, T. M. II. S., v. 120. 



Helix Hammonis, Strom, Troudh. Selsk. Skrift., iii, 425, pi. iv, fig. 16. 



Helix nitida, Fabricius, Fauna Gr., 389 (doubted by Morch, 1. c). 



Comtlus Fabricii, MoRCH, Nat. Bidr. af Gr., 75 (no descr.). — Tryun, Am. Journ. 

 Conch., ii, 256 (1866). — Morch, Am. Journ. Conch., iv, 29, pi. iii, fig. 5 

 (1868). 



Hyalina Fabricii, W. G. Binney, L. & Fr.-W. Sh., i, 47 (1869). 



Zonites Fabricii, W. G. Binney, Terr. Moll., v, 126. 



Greenland. 



