GASTEROPODA OF THE EOCENE MAELS. 205 



tive feature. Specimens indicating a length of 6 inches above the beak 



and canal are not uncommon, the diameter, in such cases, being nearly 3^ 



inches. 



Formation and locality: In the upper layers of the Upper Green Marls, 



at Shark River, Farmingdale, and Monmouth, New Jersey. Collection at 



Rutgers College and Am. Mus. Nat. Hist. 



TURBINIDiE. 



Genus CARICELLA Conrad. 



Caricella pyruloides. 



Plate XXIX, Figs. 1-6. 



Turbinella pyruloides Conrad: Foss. Shells of Ter., p. 24; PI. x, Fig. 1. 

 Caricella pyruloides Conraid: Am. Jonr. Conch.., vol. 1, p. 24; Meek, Check List 

 Eocene Foss., p. 16. 



Shell of medium size, pyriform, swollen or inflated above and attenuate 

 below, with a short obtuse spire. Volutions four or more, very rapidly 

 increasing in size, the last one forming almost the entire bulk of the shell, 

 as the inner ones are almost enveloped by the outer. Aperture very large, 

 semi-lunate, but prolonged and pointed below. Columella slender, especi- 

 ally in the lower part, somewhat bent and marked by three or four strong 

 plications or ridges. Surface as shown on the casts, marked by lines of 

 growth parallel to the margin of the aperture. 



The casts of this species are not uncommon and attain a very fair size as 

 compared with the shells as found in Claiborne sands at Claiborne, Alabama, 

 from whence it was originally described and where it is quite abundant. The 

 New Jersey specimens are usually much compressed or distorted, and the 

 columellar folds not often seen, as they show only as grooves in the marl 

 against the side of the cast of the columella, or are obtained by breaking 

 away a portion of the volution. There are seldom more than three of them 

 visible, and often only two can be detected, which, together with the absence 

 of the raised spiral striae of the lower slender part of the volution on the 

 Alabama specimens, may induce some to consider them as distinct species. 

 I think, however, these slight diff'erences are only the result of the conditions 



