GASTBEOPODA OF THE EOCENE MARLS. 199 



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

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



Fusus (Neptunea ?) Hector, n. sp. 

 Plate XXV, Figs. 3-6. 



Shell rather above a medium size, having attained a length of nearly 

 2 inches, exclusive of the anterior beak, the length of which is, in the 

 only specimen preserving- it, equal to the height of the two lower volutions. 

 Spire elevated, consisting of but few volutions, five or six apparent in the 

 cast; apical angle about 45°. Volutions strongly angular when not com- 

 pressed, the angulation being at about the middle of the exposed portion of 

 those above the principal one. Above and below the angulation the sur- 

 face is very moderately convex. Principal volution rapidly contracted 

 below the middle to the slender, twisted anterior beak, which is slightly 

 flattened and excavated near the lower end; aperture large and angular in 

 the middle of the outer lip; columella slender; volutions crossed by about 

 twelve strong, angular, vertical folds, which are traceable to near the suture 

 on the upper surface and nearly to the commenceiiaent of the beak below, 

 but are much more distinct on the angulation. The shell is also marked 

 by strong, distant, spiral lines, commencing on the carination and continu- 

 ing below, the four first nearly equidistant, with two or three more distantly 

 arranged farther down, the interspaces being flat or very moderately con- 

 cave. No spiral lines appear on the upper surface of the volutions. Fine 

 concentric or transverse lines of growth cross the shell throughout. 



This is a very well marked species, and may be readily distinguished 

 by the strong markings and by the absence of spiral lines on the upper sur- 

 face of the volution. 



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

 Shark River, New Jersey, Rutgers College collection. 



Fusus (JSTeptunea ?) Hector var. multilineatus, n. var. 

 Plate xxv, Fig. 7. 



A single crushed and imperfect specimen, which presents much the 

 aspects of F. (N.) Hector, herein described, occurs in the collection of Rut- 



