244 NEW MELANIDiE OF THE UNITED STATES. 



Operculum ovate, spiral, dark brown, with the polar point on the edge near to 

 the base. 



Melania pergrata, Proc. Acad. Nat. Sci., 1861, p. 122. 



Bab.— Coosa River, Alabama, E. R. Showalter, M. D. 



My cabinet and cabinet of Dr. Showalter. 

 Diam. -44, Length -90 inch. 



Remarks. — This species reminds one of M. crebrisiriata, M. capillaris and M. impressa 

 (nobis), (all Goniobases) by its numerous transverse strife; but these striae are neither 

 so numerous, so regular, or the intervals so deeply impressed, nor do these striaa exist 

 on the upper whorls, as in those species. The color of the epidermis is also much 

 lighter and brighter. In outline it is near to impressa, but the spire is not so 

 elevated, nor has it the bands which are visible on that species. It is to be regretted 

 that a single specimen only was received, as others may be found with different 

 character. This one has an obscure band on the upper whorls, but none whatever 

 on the lower one. The striaa on the outside are represented inside by whitish lines. 

 The aperture is fully half the length of the shell. 



Goniobasis PAULA. PL 35, fig. 48. 



Testa carinata, conica., tenui, diaphana, rufo-cornea; spira subelevata ; suturis paulisper impressis ; an- 

 fraetibus senis, superne acuto-carinatis, ultimo subbieariuato ; apertura parviuscula, lato-elliptica, 

 intus albida ; labro acuto ; columella vel albida vel rufescente, inflecta, ad basim obtuso-angulat&. 



Shell carinate, conical, thin, diaphanous, reddish horn-color; spire subelevated; 

 sutures slightly impressed; whorls six, acutely carinate above, the last subbicarinate ; 

 whorls rather small, widely elliptical, whitish within ; outer lip acute ; columella 

 either whitish or reddish, obtusely angular at the base. 

 Melania paula, Proc. Acad. Nat. Sci., 1861, p. 122. 



jj a &. — Cahawba River, Alabama, E. R. Showalter, M. D. 



My Cabinet and cabinet of Dr. Showalter. 

 Diam. -27, Length -66 inch. 



Remarks. — A very small species, about one-third of an inch long. Four specimens 

 are before me all nearly of the same size and color. This species is very closely 

 allied to Melania (Goniobasis) bicincta, Anth., but it is not much more than half the 

 size, and the carina below that on the middle of the whorl is more indistinct. In 

 the aperture they also differ, the bicincta having it larger and more disposed to be 

 rhombic, and having indistinct bands within, which this has not. In all the 

 specimens the carina is sharp. The aperture is about two-fifths the length of the 

 shell. It reminds one also of Melania (Goniobasis) rhombica, Anth., being about 

 the same length, but that species has a single sharp carina, with a less exserted 

 spire and a larger mouth. 



