98 BuivLETiN 4 213 



convex volutions, which are throughout their whole extent 

 covered b}!- fine, but distinct, revolving lines; aperture slightl)^ 

 exceeding the spire in length, sub-canaficulate anteriorly; colum- 

 ella gentl}^ arcuate; outer lip striate within. 



"Length, i inch. Knight's Branch, Clarke Co., Ala. 



" This species mainly differs from L. proi'surn Qon. in having 

 the revolving lines equally distant over the entire surface of the 

 whorls. 'J 



This species is typically developed in the Lignitic of Alabama, 

 but a few specimens have been found in the Midwa3^ Aldrich's 

 specimen was from Matthews' Landing; ours are from Black Bluff 

 and I mile west of Oak Hill P. O. A fragmentary specimen 

 from the latter locality is shown by the figure. 



PSEUDOLIVA. 

 Pseiidoliva iinicaidnata , PI. 9, fig. 16. 



Syn. P. unicarinata Aid., Bull. No. i, Geol. Surv. Ala., ri 

 p. 19, pi. 5, fig. 17. 



Aldrich's original description. — "Shell broadly ovate, whorls 

 seven, sutural line wavy; spine [spire] sharp, the upper part 

 rising suddenly from the flattened body whorl; nucleus composed 

 of three smooth embryonic whorls. Bod)^ whorl shouldered, 

 bearing large longitudinal ribs pointed at the angle, extending 

 nearly to the sulcus below; above reaching to the suture, where 

 they abruptly turn to the left and form rather deep pits between 

 them. The carina of the body whorl has a raised line connect- 

 ing the pointed part of the tuberculations; all the whorls below 

 the nucleus show the tuberculations; sulcus rather deep. No 

 umbilicus; entire surface covered with very fine revolving lines. 



''Locality. — Matthews' Landing, Ala. 



" Nearest to Pseudoliva tuberculifera Con.; but that species has 

 strong revolving lines; its tubercles are lower down on the bodj^ 

 whorl, not sharp; the sutural part is entirely different, and the 

 shell is besides much more fusiform." 



It seems as though Aldrich must have had a specimen of 

 P. scalina before him when he wrote "spire sharp, the upper 

 part rising suddenly from the flattened body whorl." Otherwise 

 the description fits the figure. 



Localities. — Alabama: Naheola; Matthews' Landing; i mi. W. 

 of Oak Hill. 



jy/'f.— Collection of T. H. Aldrich. 



Specimen figm-ed. — Lea Memorial collection, Ac. Nat. Sci. ,Phila. 



