242 LAND AND FRESn-WATER SHELLS OF N. A. [PART lY. 



{Goniuhasis) fusiformis (nobis), but differs iu 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 sliell. I 

 dedicate this species to Mr. "W. G. Binnej^, who has done so much to 

 elucidate American conchology. — Lea. 



This species may be distinguished from the following by its 

 more oval form, and by the lip being less expanded. 



133. G. ebenum, Lea. 



Melaniaebenum, Lea, Philos. Proc, 11, p. 12, Feb., 1841. Philos. Trans., viii, p. 106, 

 t. 5, f. 7. Obs.. ill, p. 4. Di:Kay, Moll. New York, p. 93. Jav, Cat., 4th cilit., 

 p. 273. BiNSEY, Check List, No. 93. Tkoost, Cat. Shells Tenn. Wheatlky, 

 Cat. Shells U. S., p. 2.5. Reeve, Monog. Melania, sp. 350. Catlow Conch. 

 Nomenc, p. ISG. Brot, List, p. 31. 



Anculotus ebenum, Lea, JIeeve, Monog. Anculotus, t. 4, f. 31. 



^itocris ehena, Lea, Ad^uis, Genera, i, p. 308. 



Description. — Shell smooth, obtusely conical, thick, black ; spire ob- 

 Fig. 471. Fig. 473. tuse ; sutures small ; whorls somewhat convex ; aper- 

 ture rather large, ovate, subangular at base, within 

 purplish. 



Habitat. — Robinson County, Tennessee ; Dr. Currey. 

 Diameter, -"0 ; length, -47 of an inch. 

 — A very dark colored and rather robust species. It 

 resembles M. tenebrosa, herein described, but differs in having the 

 whorls rather moi-e convex, and in the outer lip being more curved. 

 All the specimens received had the apex eroded, the number of 

 whorls is therefore not ascertained ; the aperture is more than one- 

 third the length of the shell. It is usually purplish on the whole of 

 the inside of the aperture. Some of the specimens are, however, 

 bluish. — Lea. 



134. G. Vauxiana, Lea. 



Ooniobasis Vauxiana, Le.V, Proc. Acad. Nat. Sci., p. 2G5, 18G3. Jour. Acad. Nat. 

 Sci., V, pt. 3, p. 309, t. 37, f. 150, March, 18G3. Obs., Ix, p. 131. 



Description. — Shell smooth, fusiform, rather thin, green; spire very 

 obtuse; sutures somewhat impressed; whorls five, flattened, carinate 

 above; aperture very large, widely rhomboidal ; outer lip acute, 

 straight; columella somewhat bent in. 



Habitat. — Coosa River, Alabama. 



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