68 PROCEEDINGS OF THE ACADEMY OF [1895. 



individuals of this species varies greatly. Some specimens are quite 

 smooth on the medial portion of the body whorl, and show but slight 

 irregularities on the shoulder. A form of this character is shown in 

 fig. 8a. Such specimens have usually two well-marked folds on the 

 columella and no trace of additional ones. 



This species is evidently related to V. haleanus Whitfd., but is 

 less strongly sculptured, and wants the peculiar concave humeral 

 zone of that species. Moreover, haleanus has three distinct and well- 

 defined columellar plaits. 



This species is named in honor of W. H. Dall, the well-known 

 authority on Volutidw. 



Localities. — Smithville; Cedar Creek, Robertson Co. , Tex. 



Horizon. — Lower Claiborne Eocene. 



Type. — Texas State Museum. 



Genus CARICELLA. 



Caricella demissa Con., var. texana Gabb. PI. 6, fig. 9. 



Cimbiola texana Gabb, Jour. Ac. Nat. Sci. Phila., vol. 4, p. 382, pi. 67, fig. 33. 

 Caricella demissa Harris, Exp. Sta. Kept., pt. 1, Geol. and Agr. , 1892. A Pre- 

 liminary Eeport upon the Hills of La., by Otto Lerch, p. 29. 



Gabb cites his C. texana from " Wheelock, Tex." His specimen 

 was evidently small and badly preserved. Normally there are six 

 whorls. The columella is considerably recurved, but this is a feature 

 that could not be determined from a specimen lacking its anterior 

 canal as did Gabb's type. The ornamentation of the spiral whorls 

 consists of revolving lines, more distinct above, and more or less 

 regular and apparent longitudinal plaits. Below the suture there is 

 a slight constriction. 



Localities. — Smithville, Bastrop Co. ; Alabama Bluff, Trinity 

 River, Houston Co.; Hurricane Bayou, Houston Co., Tex. Also 

 near Mt. Lebanon, Bienville Parish, La. 



Geological horizon of this variety.— Lower Claiborne Eocene. 



Caricella subangulata Conrad, var. cherokeensis nov. var. PI. 6, fig. 10. 



Variety characteristics. — Size and general form as indicated in the 

 figure; whorls 5; 1 mammillated; 2, 3, 4 spirally striate, suture 

 distinct ; body whorl shouldered, spirally striate above and also at 

 the base of the whorl ; columellar plaits four, the lower two more 

 oblique. 



Typical subangulata is larger, but with about one less whorl, and 

 with lower and more obtuse spire. 



