9 L,iGNiTic Stage 9 



ward becoming confluent with the anterior margin of the labrum, 

 the upper becoming obsolete at the outer margin of the labium. 



Differs iroxw galba in its more constr idled posterior; presence 

 of striation above or on the posterior; presence of a dep^'ession 

 (bounded by incipient columellar folds) where in galba a large 

 obtuse fold is found. 



Localities. — Ala.: Woods bluff, Gregg's landing, and 

 according to Aldrich, at Bell's landing also. 



Type and specimen Jigioed. — From Woods bluff; Paleont. 

 Museum, Cornell University. 



Cylichna aldrichi, PI. i, fig. 13. 



Syn. Bulla [Haininea) aldrichi, Lang., Am. Jr. Sci., 3d ser., vol. 31, 

 p. 209, 1 886. 

 Cylichna aldrichi Aid., Bull. Am. Pal., vol. 2, p. 173, pi. 5, fig. 

 5. 1897. 

 Langdo7i' s origi^ial description. — "Shell elongate oval, sub- 

 stance rather thin, punctate-striate, striae about 20, transverse; 

 spire involute; labrum sharp and slightly dentate; mouth longi- 

 tudinal and rather larger at base than at top; columella very 

 slightly thickened at the base. Height .2; Breadth .1. 



Resembles i5. glaphyra D&s\i. , but differs in the striae which 

 are in B. aldrichi from the top to the bottom, while in B. 

 glaphyra Desh, they are confined to the upper and lower thirds 

 of the shell." 



Langdon gives no locality under this description but Aldrich 

 says of the specimen he figures "from Chocftaw Corner, Ala., 

 where it is rather common." 



Localities. — Ala.: Woods Bluff; 4 miles above Hamilton bluff, 

 Alabama river; 3 miles S. W. of Thomasville, 

 Ala. 

 Type. — Aldrich' s collecftion? 



Specime7i figiwed. — The figure is a reprint of fig. 5, pi. 5, 

 vol. 2. 



RINGICULA. 

 Ringicula butlerianavar. lignitifera. PI. i, fig- M- 



Syn. R. biitlcriana var. lignitifera Aid., Bull. Am. Pal., vol. 2, p. 176, 



pi. 3, fig. 9, 1S97. 



AldricJi s original description. — Op. cit. 



Our specimens from 4 miles above Hamilton bluff on th i 

 Alabama are much .smaller than the dimensions indicated by 



