GASTEROPODA OF THE EUVUCENE MARBLS. 219 
sutures distinctly marked and limited above by a narrow ridge; volutions 
below the angle almost obconical, regularly tapering to near the end of the 
short, rather obtuse beak; aperture narrow, widest at the angle of the body 
whorl and almost gradually narrowing below, the outer lip thin and extended 
in the middle, as shown by the growth lines, forming a broad rounded 
extension; columella smooth; sinus in the outer lip situated above the 
angle of the volution, very shallow, and extending from that point to the 
suture, occupying the entire upper surtace of the volution; surface of the 
shell marked by fine spiral strize both above and below the angle of the 
volution, becoming slightly coarser and somewhat alternate below the 
middle of the whorl and on the beak; transverse strie of growth also 
marks the surface, and are sometimes grouped on the angle of the volution 
so as to produce slight undulations or incipient nodes. 
Formation and locality: In the upper or Eocene layers of the Upper 
Green Marls, at Shark River, New Jersey. Collection at Rutgers College. 
SURCULITES CADAVEROSUS, 0. Sp. - 
Plate xxx, Figs. 15, 16. 
Shell elongated, slender, and fusiform; spire elevated, as long as the 
shell below the angle of the principal volution; whorls probably six or more, 
very angular in the upper part, the upper surface flattened between the 
angle and the suture, and sloping but little, but never horizontal; below 
the angle they rapidly decrease in size downward, are but very slightly 
convex and extended in front, forming a rather long, slender, pointed ante- 
rior beak; aperture narrow and elongated, the sinus in the lip scarcely 
marked, and the margin of the lip extended forward below the angle; sur- 
face of the cast marked by proportionally coarse spiral striz of nearly 
equal size above and below the angle; also by obscure transverse lines of 
growth. 
This species differs from S. annosa in its more slender and gaunt look- 
ing form, the volutions looking angular and uncouth in their proportions from 
their great contractions between the angle and the suture below, arising 
from the great proportional exposed length of each volution. It also differs 
