POMUS. 



Fig. 7. 



species, the former, copied from Haldeman, being reduced in size. 

 Fig. 4 is a fac-simile of the outliue of Say's figure, and fig. 7 of 

 Mr. Lea's of A. hopetonensis. Fig. 6 represents a specimen 

 from Georgia. I have no doubt of the identity of this last named 

 species with depressa after examining the typical specimen. No. 

 8986 and 8987 were labelled by Mr. Lea as hopetonensis. Hal- 

 deman also places it in the synonymy. The original description 

 here follows, and an outline of the figure (7). 



Ampullaria hopetonensis. — Shell subventrioose, smooth, flattened above, 

 uinbilicate, yellowish-brown, banded ; su- 

 tures impressed ; whirls 5 ; aperture sub- 

 ovate, white. 



Habitat Hopeton, near Darien, Ga. Prof. 

 Shepard. My cabinet; cabinet- of Prof. 

 Shepard. Diain. 1.4, length 1.7 inch. I 

 owe to the kindness of Prof. Shepard of 

 New Haven this interesting shell. It was 

 procured by him during his late geological 

 investigations in our Southern States, with 

 other shells, descriptions of which will be 

 found in these memoirs. It resembles the 

 A. fasciata, Lam., but is less globose, the 

 whirls of our species being somewhat flat- 

 tened on the side and top. It diflers from 

 the A. depressa, Say, described in Major 

 Long's Exp. to St. Peter's River (subse- 

 quently changed to A. paludosa in the Disseminator) in being less globose, 

 and in being flatter on the side and superior part of the whirls. (Ze«.) 



Inhabits Georgia and Florida. 



In the preliminary Report on IST. Y. Moll. 1839, 32, A. imlu- 

 dosa is included erroneously. 



DeKay gives as synonyms A. penesima, Say, and A. dissemi- 

 nafa, Say. The names do not occur in Say's writings, though 

 the last is suggestive of the periodical in which the description of 

 A. paludosa appeared. Dr. Martens (Mai. Blatt. lY, 204) refers 

 A. depressa and A. paludosa to A. hopetonensis, disregarding 

 the priority of Say's names. 



Amjndlaria hopetonensis. 



