40 AMERICAN JOURNAL 



210. G. sulcosa, Xt'«. Fig. 291. Elongated, conical, thin ; 

 spire elongated, suture well impressed; whorls flattened, trans- 

 versely sulcate ; aperture small, orate. Yellowish. Te7in. 



When perfect specimens are obtained, this may prove to be a species of 



Pleurocera. 



211. G. Buddii, Lea. Fig. 292. Cylindrical, striate, ra- 

 ther thin ; spire attenuated, suture much impressed ; whorls 8, 

 flatly convex ; aperture small, elliptical. Horn-eolor, whitish 

 within. Tenn. 



212. G. Troostiana, Len. Fig. 293. Elevated, thickly 

 striate, thin ; spire elevated, apex acute, carinate ; whorls 10, 

 slightly convex; aperture oval. Brown, generally brown 

 within. Tenn. 



213. G. latitans, Anth. Fig. 29-1. Elevated, obscurely 

 striate^ rather thin ; spire elevated, suture deeply impressed ; 

 whorls 8 — 9, very convex ; lines of growth coarse ; aperture 

 large, oval. Greenish-brown, banded. Mammoth Cave, Ky. 



214. G» porrecta, Leu. Fig. 295. Elongated, attenuate, 

 moderately thick ; spire acuminate, suture canaliculately im- 

 pressed ; whorls 9, flattened, carinate and striate ; aperture 

 small, oval. Blackish-brown, white or brown within. E. 

 Tenn. 



215. G. sculptilis, Lea. Fig. 296. Conical, thin, thickly 

 striate ; spire conical, apex carinate and granulate, suture ir- 

 regularly impressed ; whorls 10, rather flattened, the last 

 bulbous; aperture small, elliptical. Horn-color, white within. 

 Tenn. 



216. G. creuatella, Xm. Fig. 2^7. Narrowly elongated, 

 sub-cylindrical, sub-costate, transversely thickly ridged; spire 

 much elevated, suture much impressed ; whorls 7, flattened ; 

 aperture very small, obliquely oval. Dark brown. Coosa 

 Kivevy Ala. 



[Ta he Go^neluded in April iVo.] 



