256 O. C. Marsh—New Tertiary Birds. 
ArT. XXXI— Notice of some New Tertiary and Post-Tertiary 
Birds ; by O. C. MARSH. 
THE discoveries of the last few years have shown conclu- 
sively that remains of Birds, so long unrepresented ane 
the fossils of this country, are occasionally found well preserv 
in some of our deposits of Cretaceous age.* Although still rare, 
they are more numerous in the Tertiary formation; and our 
Post-pliocene beds, doubtless rich in such remains, are begin- 
ning to yield many interesting forms of this class. The 
present paper contains preliminary descriptions of several species 
of birds, which were found by the Yale party during their ex 
lorations of last year in the lower Tertiary strata of Wyoming. 
o these are added a few species of interest from the Post- 
~<a of the Atlantic coast. 
—— nobilis, gen. et sp. NOV. 
ing bone in the Cranes, but the inner or second eters 
element is more priduced distally, and its articular face has _ 
the oe ee tubercle less developed. The tibia, also, has the 
lear groove on the posterior face of its distal extremity 
ak shallower. The distal articular ends of the second and 
fourth metatarsals are nearly equal in size, and the foramen 
between the third and fourth is large. 
Measurements. 
Transverse diameter of distal end of tarso-metatarsal, - - -- - 16° Ae 
antere eoeerees asset of distal end of second metatarsal, e : 
Transverse diameter, 2 6 -.once ek oc ce 
Asterobinkictide diameter of distal end of fourth metatarsal, 1 92 z 
Transverse diameter, . ..-2- p48 is en Co es 
e known remains of this species were found in — 
O. 
i. at Grizzly Buttes, Wyoming, by Mr. O. Harger of the - 
Yale ey The geological besser was lower cout or 
Koc 
Aletornis pernix, sp. nov. 
A smaller species, which may for the present be referred to 
the same genus, is represented also by some fragmentary spec! 
mens, found together and evidently belonging to one ore 
e most important of these remains is the distal nd o a 
* This Journal, vol. xlix, p. 205, March, 1870, and vol. iii, p. 360, May, 1872. 
