CHIEFLY OF THE UNITED STATES. 139 



are three, four, or five strioe below the middle of the whorl, which is slightly carinate. 

 The upper stria is visible on all the whorls about the suture. No folds exist on the 

 three or four last whorls. All the specimens before me except two have the apex 

 broken off. The two young ones show that the perfect shell is sharp pointed. The 

 aperture is about one-sixth the length of the shell. I name this after Dr. DeCamp, 

 who, while professionally accompanying the Federal army, collected several new spe- 

 cies, which he presented to Mr. Currier, and to him I am indebted for the privilege 

 of describino; them. 



'o 



GONIOBASIS FRATERNA. PL 23, fig. 46. 



Testa carlnata, fusiformi, subtenui, lu'tea, evittata vel quadrlvittata ; spira obtuso-conica ; suturis valde 

 impressis ; aafractibus instar senis, planulatis, superne acuto carinatis ; apertura parviuscula, ovato- 

 rhomboidea, intus alba; labro aeuto, vix sinuoso; columella teuui, inferne contorta. 



Shell carinate, fusiform, rather thin, yellow, without bands or with four bands ; 

 spire obtusely conical ; sutures very much impressed ; whorls about six, flat, acutely 

 carinate above ; aperture rather small, ovately rhomboidal, white within ; outer lip 

 acute, scarcely sinuous ; columella thin and twisted below. 



Proc. Acad. Nat. ScL, 1864, p. 111. 



Hah. — Bibb county and Cahawba river, Alab., E. R. Showalter, M. D. 



My cabinet and cabinet of Dr. Showalter and Dr. Hartman. 

 Diam. '23, Length -52 inch. 



Remarlcs. — A number of specimens from the two habitats were sent by Dr. Show- 

 alter to Dr. Hartman and myself It is a small species, well characterized, and is 

 near to paula (nobis), but is smaller and more carinate and of a brighter yellow. 

 Those from Bibb county were all without bands, while those from Cahawba river are 

 generally banded, the two middle bands being approximate. The aperture is not 

 quite half the length, of the shell. 



GONIOBASIS PORRECTA. PL 23, fig. 47. 



Testa striata, attenuata, tenebroso-fusca, uno-vittata ; spira attenuata, acuminata ; suturis valde impressis ; 

 anfractibus novenis, planulatis ; apertura parva, ovata, intus albida vel tenebrosa ; labro acuto, parum 

 sinuoso; columella inflecta et contorta. 



Shell striate, attenuate, dark brown, single banded ; spire attenuate, acuminate ; 

 sutures very much impressed ; whorls nine, flattened ; aperture small, ovate, whitish 

 or dark within ; outer lip somewhat sinuous ; columella bent in and twisted. 



Operculum ovate, dark brown, with the polar point near the left edge above the 

 basal margin. 



Proc. Acad. Nat. Sci., 18G.3, p. 155. 



