28 LAND AND FRESH-WATER SHELLS OF N. A. [PART IV. 



I was at first disposed to consider this the same as L. Flo- 

 rentiana, Lea ; but it appears to be alwaj^s colored differently, 

 being darker, with, generall}-, broad brown bands, and some- 

 times the general surface is brilliant green ornamented with 

 the bands, while Florenticma is of uniform color. This species 

 also differs from Florentkuia in being more inflated. 



2. L. Florentiana, Lea. 



Melania Florentiana, Lea, Philos. Proc. Philos. Trans., viii, p. 188, t. 6, f. 5.3. Obs., 

 iii, p. 2G. DicK.w, Moll. N. Y., p. 99. Wiieatley, Cat. Shells U. S., p. 25. 

 BixxEY, Check List, No. 110. Catlow, Couch. Nomenc, p. 186. Brot, List, 

 p. 40. 



lo Florentiana, Lea, II. & A. Adams, Genera, i, p. 299. 



Description. — Shell tuberculate, elliptical, ponderous, pale; spire 

 obtuse; sutures impressed; whorls six, slightly convex; 

 *^^ ■ aperture elongated, whitish. 



Habitat. — Tennessee River, Florence, Alabama. 

 Diameter, -47; length, -87 of an inch. 

 Observations. — An elliptical species resembling the M. 

 olivula, Conrad. Its aperture Is so much elongated as to 

 be more than half the length of the shell. Three of the 

 specimens are without bands, a fourth has several very 

 indistinct ones. The whorls are somewhat flattened ou the superior 

 part and are disposed to be tuberculated below the sutures. In the 

 young the tubercles are more distinct. In some of the adult speci- 

 mens they are entirely wanting.— iea. 



This species is well represented now, in our cabinets, and 

 very seldom exhibits the tuberculation which appears to have 

 faintly characterized Mr. Lea's first specimens. Reeve's fig. 4, 

 of Anculosa Florentiana., more properly represents L. Tuomeyi, 

 Lea. 



3. L. venusta, Lea. 



Melanin venusta, Lea, Philos. Proc. Trans., viii, p. 187. t. C, f. 52. Obs., iii, p. 23. 

 DeKay, Moll.N. Y., p. 90. Jay, Cat. 4tli edit., p. 275. Troost, Cat. Wheat. 

 LEY, Cat. Shells U. S., p. 27. Binney, Check List, No. 285. Catloav, Couch. 

 Nomenc, p. 189. Brot, List, p. 40. Reeve, Mouog. Melania, sp. 315. 



Description. — Shell disposed to be tuberculate, fusiform, some- 

 what thin, yellowish above; spire rather obtuse; sutures roughly 

 impressed; whorls six, convex; aperture elongated, at the base angu- 

 lated and channelled, within whitish. 



Mabitat.— Tennessee. 



