OF CONCHOLOGY. 15 



6. G. OCCata, Hinds. Fig. 9. Ovate, rather thin ; spire 

 obtuse; whorls few, rounded, grooved, with sharp ridges, 

 elevated into frequent irregular, sharp, acute tubercles. Brown- 

 ish, the ridges marked internally with narrow brown bands. 

 California. 



7. G. Albanyensis, Lea. Fig. 10. Conical, rather thin; 

 spire sub-elevated, suture irregularly impressed; whorls 6, 

 planulate, those of the spire plicate, with revolving granulate 

 lines throughout ; body whorl convex ; aperture moderate, 

 sub-rhomboidal, a little sinuous below. Yellowish-olive. Al- 

 bany, Baker Co., Geo. 



8. G. Stewardsoniana, Lea. Fig. 11. Sub-fusiform, 



thick, shining; spire very obtuse, suture impressed; whorls 



slightly convex, the last large, transversely striate, somewhat 



granulate ; aperture very large, oval. Dark green or brown. 



Knoxville, Tenn. 



Very closely allied to No. 5 (Fig. 8), but is thicker, smaller, without 

 bands, and generally of a peculiar dark green color. 



9. G. flavescens, Lea. Fig. 12. Sub-cylindrical, thick; 

 spire obtusely conical, elevated, suture irregularly impressed ; 

 whorls about 5, slightly convex, the last very large, folded, 

 closely striate, and slightly granulate ; aperture large, rhom- 

 boidal. Light yellowish, white, or tinged with pink or nu- 

 merously pink-banded within. Oconee and Tennessee Rivers, 

 E. Tenn. 



Narrower, more finely striate, and much lighter color than cmlaiura (No. 

 5, Fig. 8). 



10. G. catenaria, Say. Figs. 13, 14, 15. Elongate, conoidal; 

 spire conical, with a carinated angle above the suture, ob- 

 scurely longitudinally ribbed ; ribs crossed by several re- 

 volving lines, and terminating in tubercles on the body whorl ; 

 aperture small, elliptical. Brownish. S. Car. Geo. 



Fig. 13 is catenaria, from one of Say's type specimens; Fig. 14 is a half- 

 grown, and Fig. 15 the adult (and typical J sublirata, Conr. 



11. G. catenoides, Lea. Figs. 16, 17, 18, 19. Elevated 

 conical ; spire elevated ; whorls flattened, suture well im- 

 pressed ; body whorl large, inflated, angulate in middle ; whorls 

 with longitudiual ribs, terminating tuberculately upon the 

 periphery of each whorl, and with close revolving striae ; aper- 

 ture small, ovate. Light brownish, the revolving hair-like 

 striae of darker color. Chattahoochee River, Geo. 



