M E L A N I A . 



Plate XL. 



Species 2S1. (Mus. Cuming.) 



Melania laqueata. Mel. testa conico-ovatd, olivaceo- 

 vi rente, fasciis duabiis vel tribus pitrpureo-fuscis ciniju- 

 lalii, anfractibus septem, oblique plicato-costatis, inler- 

 stitiis spiraliter liratis, coslis liruque versus aperturam 

 evanidis ; aperturd ovatd, columella ad basin canalicu- 

 lato-effusd. 



The fluted Melania. Shell conically ovate, olive- 

 green, encircled with two or three purple-brown 

 bands, whorls seven, obliquely plicately ribbed, in- 

 terstices spirally ridged, ribs and ridges fading towards 

 the aperture ; aperture ovate, columella canaliculately 

 eft'used at the base. 



Say, Amer. Conch, pi. 4-7 . f. 1. 



Hub. United States. 



Strongly obliquely plaited with ribs, the interstices be- 

 tween which are finely spirally ridged, especially towards 

 the apex. 



Species 282. (Mus. Cuming.) 



Melania subcarinata. Mel. testa pyramidali-conica, 

 olivaced, anfractibus .septem ad octo, declivi-convexis, 

 primis perpaucis bicarinatis, carina inferiori ml tie pro- 

 minent e ; aperturd ovatd, parviusculd, columella ail 

 basin teuue effusa. 



The partially-keeled Melania. Shell pyramidally 

 conical, olive, whorls seven to eight, slopingly convex, 

 the first few double-keeled, the lower keel very pro- 

 minent ; aperture ovate, rather small, columella thinly 

 effused at the base. 



Anthony, MS. in Mus. Cuming 



Hub. United States. 



Very strongly pyramidally keeled, but the keels soon 

 disappear. 



Species 283. (Mus. Cuming.) 



Melania cuspidata. Mel. lestd acute conic/i, Uvido- 

 olivaced, pellucidd, ad suturas albidd, spird mucronatd, 

 anfractibus septem, convexo-planis, ad suturas subim- 

 mersis ; aperturd ovatd, columella lenue reflexd, ad 

 basin effusa. 



The spear-pointed Melania. Shell sharply conical, 

 livid-olive, transparent, whitish at the sutures, spire 

 sharp-pointed, whorls seven, convexly flattened, 



slightly immersed at the sutures ; aperture ovate, co- 

 lumella thinly reflected, effused at the base. 



Anthony, MS. in Mus. Cuming. 



Hab. Ohio, United States. 



Chiefly distinguished by its sharply pointed spire, and 

 by the apparent immersion of the whorls at the sutures. 



Species 284. (Mus. Cuming.) 



Melania plicifera. Mel. testa cylindraceo-elongatd, 



olivaced, anfractibus octo ad novem, angustis, oalide 

 concentrice plicato-costatis, costis in aufrne/u ultimo 

 evanidis ; aperturd oblonyo-ocatd, parviusculd, colu- 

 mella incurvd, parum effusa. 

 The plaited Melania. Shell cylindrically elongated, 

 olive, whorls eight to nine, narrow, strongly concen- 

 trically plicately ribbed, ribs disappearing on the last 

 whorl; aperture oblong-ovate, rather small, columella 

 incurved, but little eft'used. 

 Lea, Trans. Amer. Phil. Soc. vol. vi. pi. 23. f. 10. 

 Hab. Columbia River, Oregon. 



Distinctly characterized by its cylindrically drawn-out 

 form, and very strong plicated ribs, which cease rather ab- 

 ruptly on the penultimate whorl. 



Species 285. (Mus. Cuming.) 



Melania perangulata. Mel. testa acute turritd, fia- 

 vescente-olivaced, anfractibus octo, declivi-convexis, tri- 

 cariuatis, carina mediaud valde prominente, supera 

 gemmatd, carinis in anfractu ultimo subobsoletis ; aper- 

 turd ovatd, columella ad basin sinuato-effusd. 



The strongly-angled Melania. Shell sharply tur- 

 reted, yellowish-olive, whorls eight, slopingly convex, 

 encircled with three keels, the middle keel very pro- 

 minent, the uppermost beaded, keels nearly obsolete 

 on the last whorl ; aperture ovate, columella sinuately 

 eft'used at the base. 



Conrad, MS. in Mus. Cuming. 



Hub. United States. 



The sculpture of this species is similar to that of M. be/la, 

 more sharply and prominently developed. 



Species 286. (Mus. Cuming.) 

 Melania Curueyana. Mel. testa cylindraceo-oblovgd, 



September, 1860. 



