M ELANIA 



Plate XXXIX. 



Species 272. (Mus. Cuming.) 



Melania costulata. Mel. testa acuminato-conicd, fla- 



vescente-olivaced , anfractiius octo, primis perpaucis 

 cariuatis, ceteris rotundatis, superne longitudinaliter 

 plicato-coslatis ; aperture! ovatd, columella ad basin 

 tenue canaliculato-effusd. 



The finely eibbed Melania. Shell acuminately co- 

 nical, yellowish-olive, whorls eight, the first few 

 keeleil, the rest rounded, longitudinally plicately 

 ribbed round the upper part ; aperture ovate, colu- 

 mella thinly canaliculately effused at the base. 



Lea, Trans. Amer. Phil. Soc. vol. viii. pi. 6. f. 39. 



Hah. Tennessee, United States. 



Characteristically sculptured with somewhat irregular 

 wrinkle-like ribs running down from the suture over the 

 upper half of each whorl. 



Species 273. (Fig. a, b, Mus. Cuming.) 



Melania carinifera. Mel. turriculatd, virescente-oli- 

 vaced aut fulvd, fasciis purpureo-nifis interdum cingu- 

 latd, anfractibus septem ad octo, declivi-convexis, in- 

 ferne carinis duabus cingulatis, carina gemmatd inter- 

 dum supra ; aperturd ovatd, columella ad basin tenue 

 effusd. 



The keeled Melania. Shell turriculated, greenish- 

 olive, or yellowish, sometimes encircled with purple- 

 red bands, whorls seven to eight, slopingiy convex, 

 encircled round the lower part with two keels, with 

 sometimes a beaded keel above them ; aperture ovate, 

 columella thinly effused at the base. 



Lamarck, Anira. sans vert. vol. viii. p. 433. 



Hah. Georgia, United States. 



Encircled above the suture with two rather prominent 

 keels, and beneath the suture with, sometimes, a keel of 

 fine beads. 



Species 274. (Mus. Cuming.) 



Melania acuta. Mel. testa acuminato-turritd, solidius- 

 eii/ii, fulvo-olivaced, anfractibus octo ad decern, plano- 

 declivibus, dense concentrice strialis, sulco unico lineari 

 inferne cinctis; aperturd ovatd, parviusculd, columella 

 tenue reflexd, ad basin sinuato-effusd. 



The acute Melania. Shell acuminately turreted, rather 

 solid, fulvous-olive, whorls eight to ten, flatly sloping, 



densely concentrically' striated, encircled round the 

 lower part with a linear groove ; aperture ovate, ra- 

 ther small, columella thinly reflected, sinuately effused 

 at the base. 



Lea, Trans. Amer. Phil. vol. iv. pi. 15. f. 32. 



Hub. Georgia, United States. 



A rather solid Terebra-]ike shell, carved throughout with 

 close-set concentric strife, and sculptured above the suture 

 with a single linear groove. 



Species 275. (Mus. Cuming.) 



Melania proxima. Mel. testa elougato-lurbinafd, vi- 

 rescente-olivaced, purpureo-fusco sparse fasciatd, an- 

 fractibus octo ad uovem, plano-convexis, Uevibus, su- 

 per ne tuuiidiuscuUs ; aperturd ovatd, columella ad 

 basin tenue effusd. 



The allied Melania. Shell elongately turbinated, 

 greenish-olive, sparingly banded with purple-brown, 

 whorls eight to nine, flatly convex, smooth, slightly 

 swollen round the upper part ; aperture ovate, colu- 

 mella thinly effused at the base. 



Say, Journ. Acad. Nat. Sci. Philadelphia, vol. v. p. 126. 



Ilab. Alabama. 



Approaching to the Hemisinus type of the group. 



Species 276. (Mus. Cuming.) 



Melania nodulosa. Mel. testa obtuse subulatd, brun- 

 nescente-olwaced, anfractibus septem ad octo, declivi- 

 coure.ris, superne decussation plicato-nodulosis ; aper- 

 turd ovatd, columella ad basin tenue effusd. 



The noduled Melania. Shell obtusely subulate, brown- 

 ish-olive, whorls seven to eight, slopingiy convex, 

 decussately plicately noduled round the upper part ; 

 aperture ovate, columella thinly effused at the base. 



Lea, Trans. Amer. Phil. Soc. vol. viii. pi. 6. f. 57. 



Hab. Tennessee, United States. 



There is an approximation to the Guiana type of Me- 

 lania in this species, exemplified in the nodular decussation 

 of transverse ridges over folds running down from the su- 

 ture. 



Species 277. (Mus. Cuming.) 

 Melania Buumbyi. Mel. testa pyramidali, crassiuscuhi, 



September, 1860. 



