NEW MELANIDiE OF THE UNITED STATES. 219 



Ilab. — Coosa and Cahawba Rivers, Alabama, E. R. Show alter, M. D. 



My cabinet and cabinets of Dr. Showalter, Dr. Hartman and Dr. Lewis. 

 Diam. -68, Length 1-65 inch. 



Remarks. — This is a fine large species, and among the most robust yet found in the 

 United States. It is much larger than Melania robusta (nobis) and cannot be 

 confounded with that species, being entirely smooth and banded. The whorls 

 are also more flattened. The general character of the species is to have four 

 broad brown bands, very strongly marked on the inside. In some cases these 

 bands are increased in width, and even so combined as to make the fauces nearly 

 black within. These bands do not quite reach the margin. Where the bands 

 are not strong, the exterior is light horn color. There is a disposition on the 

 upper part of the whorls to geniculation, and this part is there yellowish. The 

 aperture is nearly half the length of the shell. I have great pleasure in naming 

 this fine species after my friend Win. D. Hartman, M. D., of Westchester, Pa. 

 who is always ready to promote the objects of Natural History and other branches 

 of science. 



GONIOBASIS VARIANS. PI. 34, fig. 2. 



Testa lajvi, vol plicata vol striata, elevato-conica, subcrassa, hvteola vel dilute fusca, vittata • 

 spira, elevata ; suturis impressis ; anfractibus septenis, superne planiuseulis; apertura parviuscula 

 clliptica, intus albida et vittata. ; labro acuto ; columella albida, incurvata, ad basiiu obtuse 

 angulata. 



Shell smooth, plicate or striate, raised conical, rather thick, yellowish or pale 

 brown, banded ; spire raised ; sutures impressed ; whorls seven, flattened above ; aper- 

 ture rather small, elliptical, whitish and banded within; outer lip acute; columella 

 whitish, incurved, obtusely angular at the base. 



Melania varians, Proc. Acad. Nat. Sci., 1861, p. 120. 



Bah. — Coosa River, Alabama, Dr. Showalter and Dr. Budd. 



My cabinet and cabinets of Dr. Showalter, Dr. Budd and Dr. Hartman. 

 Diam. -40, Length 1-4 inch. 



Bemarhs. — I have a number of specimens before me, some of which have been 

 in my possession for several years. They are allied to Melania Baysiana (nobis), 

 and I formerly thought they were a mere variety of that species ; but the 

 numerous and fine specimens sent to me, of various ages and forms, by Dr. 

 Showalter, satisfy me that the species is quite distinct. It is very variable, 

 some being smooth and beautiful, while others are plicate and others again 

 roughly striate, with a shoulder below the sutures, giving it quite a different 

 aspect. The aperture is more than one-third the length of the shell. It usually 

 has four bands, but in some individuals there are none and others have one, two 

 three or four. 



