OF CONCHOLOGY. 115 



MONOGRAPH OF THE FAMILY STREPOMATIDJE. 



[Concluded from p. 52.] 

 BY GEORGE W. TRYON", JR. 

 GONIOBASIS, Lea. (Continued.) 



J. Heavy, pupseform or cylindrical species. 



217. G. cylindraeea, Con. Figs. 298, 299. Cylindrical, 

 smooth, very thick; spire short, truncate, suture irregularly 

 much impressed ; body whorl cylindrical ; aperture very long 

 and narrow, very much contracted above. Yellowish horn 

 color, sometimes banded. N. Ala. Miss. 



Fig. 299 is from the type of M oppugnata, Lea. 



218. G. pupoidea, Anth. Figs. 300, 301. Narrowly cy- 

 lindrical, smooth, thick ; spire somewhat raised, conical, suture 

 much impressed; whorls 6, flattened above ; aperture small, 

 elliptical. Yellowish, four-banded. Coosa and Cahawba Riv., 

 Ala. 



Narrower, with longer spire and smaller aperture than G. cylindraeea. 

 Fig. 301 represents G. propi?iqua, Lea. 



219. G. lita, Lea. Fig. 303. Eugosely striate, thick ; spire 

 obtusely elevated, suture irregularly impressed ; whorls 6, the 

 last subcylindrical ; aperture small, constricted. Greenish- 

 brown, white or purple within. Cahawba River, Ala. 



220. G. fallax, Lea. Fig. 304. Pupasform, somewhat cy- 

 lindrical, smooth, spire obtuse, much elevated, suture im- 

 pressed ; whorls 7, slightly convex, the last subcylindrical ; 

 aperture small, very much constricted, elongate elliptical, an- 

 gular at base. Dark brown or dark horn color, sometimes 

 four-banded within. Coosa River, A la. 



221. G. inosculata, Lea. Fig. 305. Inflated, pupaeform, 

 thick ; spire elevated, suture very much impressed; whorls 7, 

 convex, the last subcylindrical; aperture very small, elliptical. 

 Yellowish-brown, four-banded. Coosa River, Ala. 



More inflated, of brighter color, and more distinctly banded than G. 

 fallax. 



