754 CRETACEOUS PALEONTOLOGY. 



Description. — "Shell small, measuring only about three- 

 fourths of an inch in length; form short fusiform, the point 

 of greatest diameter being nearly midway of the length; spire 

 short, the apical angle taken from a crushed example, being 

 about 70°, probably not more than 60° to 65" in perfect speci- 

 mens ; volutions ventricose, six or seven in number, the last one 

 forming the great bulk of the shell and with the anterior beak 

 forming about five-sevenths of the entire length when meas- 

 ured on the back of the volution; upper volutions compact; 

 sutures strongly marked; anterior beak short, moderately 

 strong; aperture not seen; substance of the shell very thin and 

 fragile, marked only by fine lines of growth parallel to the 

 margin of the aperture, which indicate the existence of a broad 

 and rather marked sinus in the lip on the upper side of the volu- 

 tion, formed by the extension of the lip below and on the body 

 of the volution far in advance of the margin at and just below 

 the suture; on the surface of the beak the striae gently inclined 

 backward again." (Whitfield). 



Remarks. — The type specimen of this species is the only 

 example which has been O'bserved. It is a very fragile shell 

 and is somewhat crushed and distorted. Its generic characters 

 are not clearly shown, and it is not with any certainty a mem- 

 ber of the genus in which Whitfield has placed it. However,, 

 the species may be allowed to remain where its original author 

 placed it until additional specimens are found which will throw 

 more light upon its true relationships. 



Formation and locality. — Woodbury clay, near Haddonfield 



(183). 

 Geographic distribution.— New Jersey. 



Family PTJRPURIDAB. 



Genus Rapana Schumacher. 



Rapana stantoni n. sp. 



Plate LXXXIX., Figs. 1-3. 



Description.— Shell subpyriform, with a large, vertically cor- 

 rugated umbilicus; the dimensions of the type specimen are: 



