82 PALEONTOLOGY OF NEW JERSEY. 



TURBINELLA ? VERTICALIS, 11. Sp. 



Plate in. Figs. 14, 15. 



Shell turbinate or subglobose, with a moderately elevated spire, which 

 has an apical angle of about 90°, and consists of about three and a half 

 volutions, which increase rather rapidly in size with the increased growth 

 of the shell, especially the last one, which is also very ventricose in the 

 upper part, but rapidly contracted below, and produced anteriorly in a 

 more or less extended beak; aperture elliptical in form, pointed at the 

 upper angle and prolonged below; columella strong, marked opposite the 

 middle of the aperture by thi-ee slender, almost thread-like, oblique plica- 

 tions; surface of the volutions, as shown by the casts, marked by strong, 

 rounded, vertical plications or folds, which become obsolete a little below 

 the swell of the volution and are also less distinct on the outer half of the 

 last one; about eleven of the folds may be counted on the outer whorl. 



I find this species in collections marked Pyropsis Alahamiensis Grabb; 

 but on comparison with the type of that species it proves to be a very dis- 

 tinct form, as may be readily seen by comparison with Mr. Glabb's figure,^ 

 where it will be seen that that shell has more slender volutions which are 

 nearly vertical on the sides or periphery, giving to the specimen a very dif- 

 ferent form from the subglobose or subturbinate form of this one. It has 

 more the general shape of P. odoliratus and P. septemtiratus of the New 

 Jersey beds, but differs very materially in having vertical folds instead of 

 revolving ridges, as in both of those species, and from all in the existence 

 of the three columellar folds, which entirely removes it from that group 

 of shells. 



Formation and locality : In the marls of the Lower Grreensands at Upper 

 Freehold, and in the brown marls of the same position near Burlington, 

 New Jersey. 



•Jour. Acad, Nat. Sci., Phila., 2d ser., vol. 4, PI. xlviii, Fig. 13. 



