SUBSCRIBERS. 



Darien, Geo. 

 Couper, Hamilton J., Esq. 



Portland, Maine. 

 Mighels, J. W., M. D. 

 Neal, John, Esq. 



Monmouth, Maine. 

 True, N. T. 



Providence. 

 Rhodes, Robert. 



Troy, iV. r. 

 Gales, Elias. 



Frankfort, Ky. 

 Fall, Rev. P. S. 



Berlin. 

 Royal Library. 



Hamburg. 

 Perthes & Besser. 



Nexo Species of Shells, published October 5, 1841, 

 by S. S. Haldeman. 



Anculosa crassa. Shell conical or globose, ponderous whirls 5, 

 flat or slightly convex:, spire exserted: aperture ovate, with a well 

 marked columellar notch: labium thick^ Color brown. Length 

 I in. Hab. Clinch'? R. Tennessee. Ditlers from A. prserosa by 

 the better developed spire and notch. 



Mdaiiia ciqualis. Shell thick, short, conical; with 5 flat whirls, 

 ornamented with longitudinal ribs: texture thin, surface smooth, 

 aperture narrow elliptic, as long as the spire. Color brown. ^ in. 

 long. Hab. Nolachucky R. Closely resembles the young of lo 

 spinosa, and differs from the young of Melania nupera as figured by 

 Say, (Am. Conch., pi. 3,) by the want of the concentric elevated 

 lines on the anterior slope. This figure, as I am infonned by Mrs. 

 Say, does not represent the young of the principle figures, (Lithasia 

 nupera,) but another species, which if distinct, will retain the name 

 M. nupera, as it appears to be a true Melania. 



Mdania uncialis. Shell pale olivaceous, turrited, with 8 or 10 

 slightly convex whirls, the earlier ones of which are strongly cari- 

 nated:"lines of ffrowth curved; aperture ovate, with a sinus ante- 

 riorly. 1 inch long. Hab. Beaver creek, N. E. Tennessee. Bears 

 a general resemblance to M. Virginica. As far as I can judge from 

 the description, it must be somewhat like M. Warderiana, Lea. 



Melania symvietrica. Shell olivaceous, turrited, with 8 or 9 con- 

 vex whirls, separated by a deep suture: apex carinated anterior to 

 the middle of the whirls, aperture ovate. Length J in. Hab. 

 Roanoke R., Va. Less ponderous than the preceding species, and 

 distinguished Irom M. Virginica by the carinated apex. 



Melania bellacrcnata. Shell reddish, subulate, whirls 11, marked 

 with a strong carina, and a crenulated line posterior to it. | in, 

 long. Hab. Alabama. Differs from M. bella, Con., by having an 

 oval aperture. 



Limnea vitrea. Shell ovate or conoid, very thin in texture, sur-, 

 face smooth and shining, translucent: whirls 4, convex. ^ in. long. 

 More delicate than L. desidiosa, and more ventricose than L. pal- 

 lida. 



Published, Dec. 28lh, 1841. 



Amnicola attenuata. Shell very long and slender, with 6 obliquely 

 revolving, very convex turns, separated by a deep suture: aperture 

 small and ovale, with the peritreme level and continuous. Length 

 J inch. Hab. A spring in Montgomery county, Va. Obs. Very 

 like, but more slender than Cyclostoma lapidaria, which 1 refer to 

 this genus, as well as C. Cincinnatiensis, Lea; retaining for this 

 species Mr. Anthony's specific name Sayana. 



Amnicola pallida. Shell very pale ochraceous, umbilicated, about 

 the size of A. luslrica: aperture oval, with the labium very closely 

 appressed to the body whirl, so as to render the junction nearly 

 invisible. Hab. Middlebury, Vermont, Prof. Adams. 



