72 Bulletin ii 7a 



evident, but there" was probably a considerable backward swing 

 to them in the middle of each whorl. 



Closely resembles specimens in the Lower Eocene of the Paris 

 basin. 



Localities. — Ala.: Yellow bluff ; Bell's landing. 



Type and specimen figured. — Yellow bluff; Lea Memorial col- 

 leAion, Acad. Nat. Sci. Phila. 



Cerithium delicatulum, PI. 9, fig 5. 



Syn. Cerithium delicatulicm Aid., Bull. Am. Pal., vol. 2, p. 179, pi. 2, 

 fig- 9- 



For Aldrich's original description, see above reference. 



Locality. — Ala.: Hatchetigbee bluff. 



Cerithium tombigbeense, '' PI. 9, fig. 6. 



Syn. C. tombigbeense Aid., Bull. i. Geol. Surv. Ala., 1886, p. 34, pi. 3, 



fig- 7- 

 P. {Cerithiinn) totnbigbeensis Dall., Tr. Wag., etc., vol. 3, p. 287. 



Aldrich's original description. — "Shell elongated, whorls 

 probably twelve; suture distindl, situated in a depressed space; 

 surface of the uppermost whorls smooth, those following trans- 

 versely striated, the lower ones with numerous oblique longitud- 

 inal ribs, rising into tubercles on the center of the body whorl 

 and the two next above; a wavy line just below the suture, mak- 

 ing a slight shoulder to the whorls. Lines of growth sigmoid, 

 fine and numerous upon the body whorl, obsolete above. Aper- 

 ture ovate, outer lip refiecfted below, making a short, open canal. 



''Locality. — Woods bluff, Ala. 



"Only one specimen found; the mouth is broken away, render- 

 ing it impossible to determine its generic position absolutely. 

 The apex is also missing, but is probably sharp. Suggests the 

 genus Melania.'''' 



Cerithiopsis fluviatilis, PI. 9, fig. 7. 



Syn. C. fluviatilis Aid., Bull. Am. Pal., vol. 2, p. 178, pi. 2, fig. 3. 

 For Aldrich's description, see the above reference. 



