24 AMERICAN JOURNAL 



74. G. rugosa, Lea. Fig. 117. Conical, rather thin, trans- 

 lucent; spire elevated conical, suture very much impressed; 

 whorls 7, very convex, with close, erect ribs, crossed by slight 

 strire, ribs terminating at a raised line on the periphery; aper- 

 ture angular below. Horn-color, whitish within. Term. 



75. G. COStulata, Lea. Fig. 118. Conical, rather thin; 

 spire lengthened, carinate above, suture impressed ; whorls 9, 

 rather convex, wity much curved, rounded folds ; aperture 

 small, sub-rhomboidal, angular below. Yellowish, bluish with- 

 in. Tenn.; Barren River, Ky. 



76. G. cinerella, Lea. Fig. 119. Sub-fusiform, thin; 

 spire obtusely conical, suture irregularly impressed ; whorls 

 6, slightly convex, with close folds, decussated by two lines 

 below the suture. Ash-color, not banded, whitish within. 

 Tenn. 



78. G. caliginosa, Lea. Fig. 120. Conical, somewhat 

 thick; spire elevated, suture irregularly impressed; whorls 8, 

 rather convex, cancellate throughout by distant nearly equal 

 longitudinal and transverse plications. Dark brown, purple 

 within. Tenn. 



79. G. nodulosa, Lea. Fig. 121. Conical, thick; spire 

 elevated, suture irregularly impressed ; whorls 7, rather flat- 

 tened, closely cancellate, the last large ; aperture rather large, 

 sub-angular below. Dark brown, bluish within. Tenn. 



81. G. difficilis, Lea. Fig. 122. Lengthened, conical, 

 rather thin; spire attenuate, suture moderate; whorls 8, slightly 

 convex, the upper ones obsoletely plicate. Dark olive or 

 brownish, not banded, white within. Tenn. 



82. G. sparus, Lea. Figs. 123, 124:. Lengthened conical, 

 somewhat thick; spire attenuate, suture irregularly impressed; 

 whorls 8, convex, the upper ones with small curved folds, de- 

 cussated by a revolving line below the suture. Pale yellow, 

 not banded. Duck Greek, Tenn. 



Fig. 124 is G. cerea, Lea. 



83. G. Thorntonii, Lea. Fig. 125. Conoidal, rather thin; 

 spire conical, suture much impressed ; whorls slopingly con- 

 vex, with distant prominent bent folds, ending in nodes on the 

 periphery. Horn-color, not banded. Tuscumhia and Florence, 

 Ala. 



81. G. cancellata, Say. Rather slender, attenuated; 

 whorls convex, with about 26 longitudinal, crossed by 18 re- 

 volving lines, those towards the base crowded. Florida. 



I have not seen this species, and it has never been figured. 



