OF CONCHOLOGY. 5 



growth crowded, curved ; aperture rhomboidal, rather narrow, 

 terminating in a contracted fuse, outer lip very sinuous, 

 curving forward towards the base, columella short and rounded. 

 Bright olive-green, nearly orange beneath the suture; aper- 

 ture and columella purple. 



Dimensions. — Length (eroded) 19 mill., diam. 10 mill. 



Habitat. — Bridgeport, Ala., (W. H. DeCamp.) 



Cabinet of Charles M. Wheatly, Phoenixville, Penna. 



Observations. — This species is closely allied to PI. aratum, 

 Lea, but differs in the position of the carina?, the form of the 

 aperture, etc. I do not know any other species with which it 

 can be compared. I have seen only one individual, but the 

 differences it exhibits are too marked to permit it to remain 

 uncharacterized. 



3. Euryc^lox Leah, Tryon. — t. 2, f. 3. 



Description. — Shell conical, thick, shining; spire conical, 

 obtusely elevated, suture moderately impressed; whorls about 

 6, slightly convex, everywhere covered with very fine close 

 revolving striae, somewhat shouldered beneath the suture and 

 crimped, body whorl large, slopingly convex ; aperture large, 

 ovate, broad below. Wax-yellow or somewhat olivaceous, 

 lighter beneath the the suture, white within. 



Dimensions. — Length (eroded) 19 mill., diam. 13 mill. 



Habitat. — Etowah Eiver, Cartersville, Geo., (W.H. DeCamp.) 



Cabinet of Charles M. Wheatley, Phoenixville, Penna. 



Observations. — This species is somewhat like Gon. luteola, 

 Lea, in color, stria? and texture, but differs in having tuber- 

 cles, and in the form of the aperture. In G.pergrata, Lea, the 

 striae are coarser, and the tuberculations wanting. It is a 

 very neat species, beautifully marked by the narrowly com- 

 pressed numerous tubercles under the suture, and its close, 

 waved revolving stria?. 



4. Goniobasis undulata, Tryon. — t. 2, f. 4. 



Description. — Shell turrited, narrow, moderately thick; spire 

 much elevated, acute, suture deeply impressed; whorls 9 to 10, 

 somewhat convex, sloping, carinate just above the suture, with 

 faint plications above the carina, crossed by raised revolving 

 striae, which extend over all the whorls, and number 9 on the 

 body whorl ; the revolving striae, in crossing the ribs, appear 

 undulated; aperture small, oval, a little angled at the base. 

 Color dark brown, without bands. 



