196 PALEONTOLOGY OF NEW JERSEY. 



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

 at Shark River, New Jersey, collection at Rutgers College. 



FUSUS PAUCICOSTATUS, n. sp. 

 Plate XXVI, Figs. 1-6. 



Shell elongate-fusiform, and turreted, spire moderately robust. Volu- 

 tions strongly ventricose, the last one proportionally larger than the others; 

 number unknown, but apparently about seven, judging from those on indi- 

 viduals of various sizes, longitudinally costate; costa six on each volution, 

 strong, sometimes resembling longitudinal tubercles with broad concave 

 interspaces and forming vertical lines along the spire, obsolete on the lower 

 side of the volution and scarcely extending to the suture line above. Aper- 

 ture large, inflated on the larger specimens. Beak slender, slightly twisted, 

 shorter from the middle of the aperture than the length of the shell above, 

 and with a narrow canal. Surface of the shell marked by fine, but distinct, 

 raised spiral lines, those on the lower half of the body volution and on the 

 beak somewhat alternating in size. 



This shell appears to have been a true Fusus and to have resembled 

 Fusus colus except in the number of costa and the shortness of the beak. 

 The species appears to have attained a fair size, the largest specimen in the 

 collection before me having measured about 2J inches in length. The 

 different specimens (all casts) show considerable variation in the strength 

 of the spiral lines and in their relative distance. 



Formation nnd locality : In the uppermost layers of the Upper Green 

 Marls, at Shark River, New Jersey. From the collection at Rutgers 

 College. 



Fusus PEROBESUS, n. sp. 

 Plate XXV, Figs. 8, 9. 



Shell proportionally short and obese, the volutions being very ventri- 

 cose and round in proportion to their height, and also very rapidly increasing 

 in size transversely. Spire short, the apical angle having been not far from 

 70° to 75°. Volutions five or more, very full and gibbous between the suture 

 Imes, the body whorl extended below into a short and slender beak. Aper- 

 ture round-ovate, rapidly narrowed belowj forming the canal. Columella 



