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



win suggest that of the gentleman to whom I have been under many 

 obligations in this department. — DeKay. 



Ifelania inemta. — Shell elongate, turreted; apex eroded, unicolored, 

 brownish-green; whorls 3-4, very convex. The last gibbose, con- 

 stricted behind ; sutures impressed ; aperture broadly lunate, scarcely 

 effuse ; lip brownish. 



Habitat. — Virginia. 



Observations. — Possibly this may be a largely truncated specimen 

 of 31. Virginica, which it resembles in its aperture. The form of the 

 ultimate whorl is unusual. — Anthony, 



Philippi (Neuer Conchyl.) is very much mistaken in his 

 remarks relative to the wide distribution of this species, as it 

 certainly has never been found near Cincinnati nor in Central 

 America. This shell is the only Melania inhabiting the east- 

 ern portion of the Middle States and is nowhere found in the 

 tributai-ies of any of the western rivers. As the striate and 

 smooth varieties are frequently observed in conjunction, and 

 as the young shells appear indifferently smooth or striate, 

 there can be no doubt that they all form one species. 



Philippi figures the following varieties of muUilineata : — 



a. Sulcosa equally transversely striate ; last whorl one- 



banded. 



b. Ligata transverse striae unequal, two-banded. 



c. Fasciata rarely-obsoletely sulcate, two-banded. 



d. Concolor without bands. 



The first figures represent specimens from Delaware River. 

 The figures of gemma and hizonalis are copied fi'om DeKay's 

 work. 



192. G. sulcosa, Lea. 



Melania sulcosa, Lea, Philos. Proc, ii, p. 14, Feb., 1841. Philos. Trans., viii, p. 



l&j, t. G, f. 48. DeKay, Moll. N. Y., p. 99. TuooST, Cat. Shells Tenn, 

 Fig. 570. Catlow, Conch. Nomenc, i, p. 189. Binney, Check List, No. 259. 



Wheatley, Cat. Shells U. S., p. 27. Brot, List, p. 35. 

 Ceriphasia sulcosa, Lea, Ciienu, Man. de Conchyl., i, f. 1957. AdamS, 



Genera, i, p. 297. 



Description. — Shell transversely sulcate, conical, thick, 3'el- 

 lowish ; sutures impressed ; whorls flattened ; aperture small, 

 ovate, whitish. 



Habitat. — Tennessee. 



Diameter, -32; length, -75 of an inch. 



