PULMONATA PHYSIDAE PUYSA LOKDI. 



939 



PHYSA ALTONENSIS, Lea. 

 Phtjsa altonensis, LEA, Proc. Acad. Nat. Sci. Phila., 1864, 114. 



Type found at Alton, 111. 



Found by the collectors of the expedition as follows : 



The two last numbers represent a variety differing in some essential 

 points from the type. 



PHYSA ANCILLAMA, Say. 



Pltysa ancillaria, SAY, Jour. Acad. Nat. Sci. Phila., v, 1825,124. SAY, Conch., Binney' 

 ed., 114. BINNEY & BLAND, Land & Fresh Water Shells N. A., ii, 1869, 

 81, f. 139. HALD., Mon., 1843, 27, pi, iii, figs. 1-10. GOULD, Invert., 1841, 

 213, f. 142. ADAMS, Verm. Moll., 1842, 154. DEKAY, N. Y. Moll., 1843, 78 

 pi. v, 90. CHEMNITZ, 2d ed., 20, pi. xii, figs. 12, 13. CHENU., Man. de 

 Couch., ii, 480, f. 3550. ANON., Can. Nat., ii, 1857, 211, fig. 



Physa oltesa, DEKAY, N. Y. Moll., 1843, 78, pi. v, f. 86. 



Is distributed from New England to Louisiana southward and to New 

 Mexico westward. Taken as follows : 



The last enumerated is a variety. 



PHYSA LOEDI, Bd. 



Phtjsa lordi, BD., Proc. Zool. Soc. London, 1863, 68. W. G. BINNEY, Laud & Fresh 

 Water Shells N. A., 1865, 76. 



Is a characteristic shell of the higher grounds of the Rocky Mountains, 

 according to Baird. The specimen secured differs slightly from the type, 

 and is considered a variety by Dr. Lewis. 



