194 



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



Fig. 380. Fig. 38L 



lowish-browa; spire elevated ; sutures irregularly impressed; whorls 

 eight, rather flattened; aperture small, elliptical, angular below, 

 bluish. 

 Habitat. — Cany Fork, Tennessee. 

 Diameter, '29 ; length, '77 of an inch. 



Observations. — I owe to Mr. Edgar's kindness, several specimens 

 of this pretty species, which I name after him. It 

 is remai'kable for being folded and transversely 

 striate on all the whorls, except the lower part of 

 the body-whorl, which is striate only. The crossing 

 of the folds and striae give it a cancellated appear- 

 ance. The aperture is rather more than one-fourth 

 the length of the shell. The number of stria) on 

 the body-whorl is about ten. — Lea. 



This species is by no means uncommon in cabinets, and 

 some specimens attain to noble proportions. 



71. G. rugosa, Lka. 



Mdania corrugata. Lea, Philos. Proc, ii. p. 13, Feb., 1841. Philos. Trans., viii, 

 p. 177, t. 5, f. 30. Obs., iii, p. 15. TiiOOST, Cat. Shells, Tenn. Wheatley, 

 Cat. Shells, U.S., p. 24. 



Melania rngosa, LEA, Philos. Proc, ii, p. 237. Dec, 1842. Philos. Trans, viii. p. 

 248. Obs., iii, p. 86. DeKav, Moll. New York, ]). 96. Binney, Check List, 

 Ko. 235. Catlow, Coneh. Notnenc, p. 188. Brot, List, p. 34. 



Description — Shell folded, conical, rather thin, translucent, trans- 

 versely striated, horn color; spire rather elevated; sutures very 



much impressed; whorls seven, convex, cancellated above; 



r Iff. 3S2. 

 aperture rather large, elliptical, angular below, whitish. 



Habitat. — Tennessee. 



Diameter, "22 ; length, '50 of an inch. 



Observations. — This is a small, folded species of which a 

 single specimen was received from Dr. Troost. The superior whorls 

 are carinated. The folds extend to the body-whorl. The aperture 

 is rather moi*e than one-third the length of the shell. — Lea. 



I have not seen this species, but it is evidently a young 

 shell. It was first described as M. corrugata, but as that name 

 was preoccupied by Lamarck it was changed to rugosa. 



