SECTION III 



CRETACEOUS GASTEROPODA FROM THE BASE OF THE UPPER MARIi 



BEDS OF NEW JERSEY. 



TURBINELLID^. 



Genus CAEICELLA Conrad, 



Cakicella plicata, n. sp. 



Plate XXIII, Figs. 1, 2. 



Shell small, turbinate or pyriform, with a short, broadly conical spire 

 having an apical angle of about 85°. Volutions four or more, not exceeding 

 five, the apical one mammillated; upper surface sloping in the direction of 

 the spire, slightly angulated at the point of greatest diameter and the lower 

 extremity slightly attenuated; body of the volution ventricose; aperture 

 large, nearly three-fourths the length of the shell, oblique and somewhat 

 elliptical in general form, canaliculate below. Columella slight, as shown by 

 the cavity left by its removal, marked by four very distinct, oblique, equi- 

 distant folds, the upper one of which is situated nearly at the middle of the 

 length of the aperture. Body volution marked in the cast by about twelve 

 very oblique vertical folds, which are directed very strongly forward in pass- 

 ing from above downward, but are confined entirely to the region of the 

 angle near the top of the volution. No positive evidence of other surface 

 markings can be detected on the casts. 



This shell differs from most of the species of the genus as they occur 

 in the Eocene fonnations in having vertical folds marking the largest part 

 of the body volution. In shape and in the folds of the columella and their 

 relative position it agrees perfectly well with the characters of Caricella; in 

 the vertical folds it resembles Valuta. In size and general form and in the 

 vertical folds the specimens are very like Conrad's figure of Pseudoliva 

 tuberculifera (Jour. Acad. Nat. Sci., Phila., 2d series, vol. 4, p. 294, PL 47, 



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