140 LAND AND FRESH-M^ATER SHELLS OP N. A. [PART IV. 



B. Shell tuherculnte or nodulous. 

 2. G. varians, Lea. 



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



Goniobasis varians, LEA, Jour. Acad. Nat. Sci., v, pt. 3, p. 219, t. 34, f. 2, March, 

 1803. Obs. ix, p. 41. 



Description. — Shell smooth, plicate or striate, raised conical, rather 



_. „^ thick, yellowish or pale brown, banded ; spire raised ; sutures 

 Fig. 258. 



impressed ; whorls seven, flattened above ; aperture rather 

 small, elliptical, whitish and banded within ; outer lip acute ; 

 columella whitish, incurved, obtusely angular at the base. 



Habitat. — Coosa River, Alabama; Dr. Showalter and Dr. 

 Budd. 



Diameter, -40; length, 1-4: inches. 



Observations. — I have a number of specimens before me, 



some of which have been in my possession for sevei'al years. They 



are allied to Melania Haysiana (nobis), and I formerly 



• Fig. 259. 



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



uumei'ous 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, M'hile others are plicate and others again roughly 



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



diflerent 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. — Lea. 



The first figure is a copy of Mr. Lea's ; the other figure is 

 from a specimen belonging to tlie Smithsonian Institute. This 

 latter appears to be the t^^pical form of the species. 



3. G. Hydeii, Coxrad. 



Melania Hydeii, Coxrad, New Fresh Water Shells, p. 50, t. 8, f. 1, 1834. Reeve, 



Monog. Melania, sp. 248. DeKay, Moll. N. York, p. 93. Wheatley, Cat. 



Shells, U. S. p. 25. BiNNEY, Check List, No. 141. Conrad, MuLLER, Synopsis, 



p. 44. 

 Melanin ITijdei,. Conrad. Jay, Cat. Shells, 4th edit., p. 273. Buot, List, p. SI. Hax- 



I.EY. Couch. Misc. t. 1, f. 3. 

 Melania Ilydll, Conrad, Catlow, Conch. Nomenc, p. 187. 



Description. — Shell conical, rather elevated; whorls flattened, with 



