932 



ZOOLOGY MOLLUSCA. 



Helixpatula, DESHAYES, Encycl. M6th., ii, 1830, 217. 



Anguispira perspective/,, TRYON, Am. Jour. Conch., ii, 18CC, 262, pi. iv, f. 50. 



Distributed throughout the whole of Eastern North America. Taken 

 in New Mexico by expedition. 



Genus VALLONIA, Risso. 

 VALLONIA PULCHELLA, Miill. 



Helix pulchclla, MULL, Verm., 30. PFEIFFER, Mon. Hel. Viv., i, 365. BINNEY, Bost. 

 Jour. Nat. Hist., iii, 1840, 375, pi. 9, f. 2. Id.. Terr. Moll., ii, 175, 17, f. I. 

 GOULD, Invert,, 1841, 176, f. 102. ADAMS, Verm. Moll., 1842, 159. 

 LEIDY, T. M. U. S., i, 1851, 26, pi. ix, figs. 7-9. BINNEY & BLAND, Land & 

 Fresh Water Shells N. A., 1869, pi. 157. BINNEY, Cat. Terr. Moll., Bull. 

 Mus. Comp. Zool,, iii, No. 9, 194. 



Helix in-inuta, SAY, Jour. Acad. Nat. Sci. Phila., i, 1817, 123. NIOH., Eucycl., 3d ed., 

 1819; Binney's ed., 3. DEKAY, N. Y. Moll., 1843, 40, pi. 3, f. 33. MORSE, 

 Am. Nat., i, 1867, 544, f. 39. ROBERTS, U. S. Geol. Surv. Terr., 1870, 468. 



Helix costata, MULLEK, vide PFEIFFEE, Mou. Hel. Viv., i, 366. 



Vallonia minuta, MORSE, Port. Soc,., 1864, 21, figs. 54-56, pi. 8, f. 57. TRYON, Am. 

 Jour. Conch., iii, 1867, 36, pi. 8, f. 20. 



A widely distributed form from Canada to Florida ; also found through- 

 out Europe, Siberia, Thibet, Madeira, Azores, &c. Belongs more particu- 

 larly to the northern region of the Central Province. 



FAM. VITRINIDAE. 



Genus VITRINA, Drapr. 

 VITRINA PFEIFFERI, Newcouib. 



Vitrina pfeifferi, NEWCOMB, Proc. Cal. Acad. Nat, Sci., ii, 1861, 92. TRYON, Am. Jour. 

 Conch., ii, 1866, 244, -pi. iii, f. 3. BINNEY, Bui. Mus. Comp. Zool., iii, No. 

 13, 192-198. 



An exclusively western form, found from 37 to 42 latitude, from 



