88 TRANS. OF THE ACAD. OF SCIENCE.. 
I. On some New Spectss of Fosstus from the Cretaceous 
Formation of Nebraska Territory. By Joun Evans, 
M.D., and B. F. Saumarp, M.D. 
ACEPHALA, 
Avicvta Nzsprascana. 
cave, pointed ; anteri rior wing email - umbo convex, not gibbous 
: small, Projecting very slightly ‘above the cardinal edge : sur- 
face marked with radiating, thread-like, simple strie. At four 
lines 5 the beak, there are about eight of these stria in the 
d by implan oe on = Poona a are about double the 
seidth of the strie, and with very fine longitudi 
lines. With the aid we a is Voy very fine, closely arranged, wa 
lines of growth are perceptible. 
I sigat in the ( Cretaceous Formation, ne near Moreau River, re 
is I 1 (OrsIs. : . sevens ss 
Shell small, ovate, subquadrate, usuall 
ee, eben bebin 
