18 RertiarTcs on Certain Species of 



entirely with Bishop Elliott's, from one of which my figures 

 were taken. 



For the beautiful specimens in my cabinet, I am indebted to 

 Bishop Elliott, who collected them in Murray Co., Georgia, 

 and Soquatchee Yalley, Tenn. He has recently sent me also, 

 " the only one found in a pretty extensive search in the Cum- 

 berland Mountains, Tennessee." 



Helix Dorfeuilliana lica. 



Plate IX. Fig. 24-26. 



Polygj-ra DorfeitilUana Lea Trans. Amer. Phil. Soc. VI. p. 107, pi. 



xxiv. fig. 118. 1838. 



Helix fatigiata Binn. Bost. Jl. III. p. 388 ex parte, (excl. Syn. et fig.) 



1840. 



u a Terr. Moll. IL p. 193 ex parte, (excl. Syn. et 



fig.) 1851. 



(nan Pfr. — Desh, in Fer. Hist. — Chemn, — Reeve.) 



The following is a copy of Mr. Lea's description, — ^his figures 

 are copied on Plate IX. fig. 24:, 25. 



"POLYGYKA DOEFEUILLIAKA. 



"T. superne obtuso-conica, inferne subinflata, nrtidS,, cornea, longitu- 

 dinaliter striata, late umbilicata ; anfr. 6 ; apertura lunata, tridentata. 



" Shell above obtusely conical, below somewhat inflated, shining, horn 

 color ; longitudinally striate, widely umbilicate \ whorls six \ aperture 

 lunate, three toothed. 



" Hah. — Ohio. Mr. Dorfeuille, Cincinnati. 

 '" Diam. .3 ; Length .2 of an inch. 



** Remarks. — I adopt Mr. Say's genus Polygyra, believing the divi- 

 sion, though very artificial, quite as good a.s ixiany made by Lamarck. 



