NEW MELANIDiE OF THE UNITED STATES. 311 



Remarks. — Only two specimens were received from Dr. Spillman. The smaller 

 one is rather the thicker. It has very much the outline of Llthasia Showalterii (nobis), 

 and at first I thought it was only a variety of that species, but the absence of a callus 

 above and below on the columella, and a channel at the base preclude its being a 

 IAthasia. It is nearly allied to Melania {Goniobasis) fusiformis (nobis), but differs in 

 being more ovate, in having a shorter spire, larger aperture, and in being of a darker 

 color. The aperture is more than half the length of the shell. I dedicate this species 

 to Mr. W. G. Binney, who has done so much to elucidate American eonchology. 



Goniobasis Tuomeyi. PI. 37, fig. 153. 



Testa lsevi, fusiformi, crassiuscula, luteo-oliva, vittata vel evittata ; spira obtuso-conica, ad apicem minute 

 plieata ; suturis inipressis ; anfractibus instar senis, superne planulatis, ultimo subveutricoso ; apertura 

 grandi, rhomboidea, intfis albida ; Iabro acuto, paruui sinuoso ; columella incrassata, incurva et 

 contorta. 



Shell smooth, fusiform, slightly thick, yellowish olive, banded or without bands ; 



spire obtusely conical, minutely plicate at the apex; sutures impressed; whorls 



about six, flattened above, the last one ventricose ; aperture large, rhomboidal, whitish 



within ; outer lip acute, somewhat sinuous ; columella thickened, bent in and 



twisted. 



Proc. Acad. Nat. Sci., 18(32, p. 26(3. 



Hab. — North Alabama, Prof. M. Tuomey. 



My cabinet and cabinet of Dr. Hartman. 

 Diam. "35, Length - 70 inch. 



Remarks. — My friend the late Prof. Tuomey, sent to me during his geological sur- 

 vey of the State of Alabama, many new Mollusca, most of which I described at the 

 time. Some were laid over for more leisure and further examination. Among them 

 was a number of this species which I now dedicate to his memory with peculiar grat- 

 ification. He was an ardent student of nature, and warm and generous in his friend- 

 ships. This species varies very much. None of the specimens have perfect tips, but 

 some are nearly so, and display on the apicial whorls very minute and close plicae. 

 Some have minute venations on the body whorl. They are generally without bands, 

 yet some have two bands, but more frequently only one, which is about one-third of 

 the whorl below the suture. It is rather broad and distinct inside and out. In out- 

 line and size it is closely allied to Melania (Goniobasis) gracilis (nobis), but it is not 

 so high in the spire nor is it so yellow. The aperture is about one-half the length of 



the shell. 



Goniobasis fabalis. PI. 37, fi°'. 154. 



1 ; "o* 



Testa tevi, elliptica, crassS,, lutoa, quadrivittata; spiva valde obtusa ; suturis irregulariter inipressis; 

 anfractibus quaternis, superne couvexiusculis, ultimo pergrandi ; apertura magna, subrhomboidea, 

 intils albida et vittata; labro acuto. vis sinuoso 3 columella interne et superne incrassata. 



