168 LAND AND FRESH-WATER SHELLS OF N. A. [pART IV. 



preaches nearer to decorata, Anthon3^ The outer lip in this 

 species is not so expanded as in carinocostata., and the body- 

 whorl is not angulate as in that species. 



33. G. obtusa, Lea. 



Melania obtusa, Lea, Philos. Proc, ii, p. 13, Feb., ISil. Philos. Trans., viii, p. 176, 

 t. 5, f. 28. Obs., iii, p. U. DeKav, Moll. New York, p. Ofi. Binney, Check 

 List, No. 183. Tkoost, Cat. Shells, Tennessee. Wiieatley, Cat. Shells, 

 U. S., p. 2G. Catlow, Conch. Nomenc., p. 188. Brot, List, p. .59. 



Goniobasis cadus, Lea, Proc. Acad. Nat. Sci., p. 272, 18(i-2. Jour. Acad. Nat. Sci., 

 V, pt. 3, p. 345, t. 38, f. 211, March, 18f!3. Obs., ix, p. 1G7. 



Melania stibstricta, Haldeman, Monog. Limniades, vii, p. 4 of cover, Jan., 1844. 

 Wheatley, Cat. Shells, U. S., p. 27. Binney, Check List, No. 25G. Brot, 

 List, p. 36. 



Description. — Shell folded, fusiform, rather thick, horD-color; spire 

 obtuse ; sutures impressed ; whorls four, the last semi-plicate ; 



fig- 324. , , . . , 



aperture large, whitish. 



Habitat. — Tennessee. 



Diameter, -27; length, '55 of au inch. 



Observations. — A fusiform species with costse or folds half 



wa\' down the last whorl. — Lea. 



The following are believed to be synonymes : — 



G. cadus. — Shell cancellate, subfusiform, somewhat thick, inflated, 

 yellowish, without bands ; spire very obtuse ; sutures irregularly im- 

 pressed ; whorls five, slightly convex, cancellate above ; aperture 

 very large, ovately rhoraboidal, white within; outer lip sharp, 

 slightly sinuous; columeHa bent in, thickened and twisted. 



Habitat. — Georgia; Major Le Conte. 



My cabinet. 



Diameter, -33 ; length, -03 of an inch. 



Observations. — A single specimen has been in my possession for 

 many years. The description was delayed in the hope of 

 other specimens being found. It was a single one among 

 many species, brought by our late lamented vice president 

 from Georgia, which he placed in my hands. This species 

 reminds one of Melania (Goniobasis) Deshayesiana (nobis), 

 but it is entirely different in the outline and number of its 

 whorls, being a very short shell with a very different size of aperture. 

 The aperture is more than half the length of the shell. — Lea. 



Melania substricta. — Brown, lengthened conical, upper whorls flat- 



