THE FOSSIL AVIFAUNA OF THE 
403 
to be identical in all particulars of character with the corresponding Ixjues in a 
skeleton of Lophodytes mcullatus in the collection of tlie U. 8. National Museum 
(No. 18,597). The fossil humerus is perfect, and all the other bones very nearly 
so. Length of humerus 70 millimetres ; length of carpo-metacarpus 43 millimetres ; 
extreme length of anyone of the coracoids 47 millimetres. 
Co]3e collection : Equus Beds of Oregon. 
Anas boschas. 
Two carpo-metacarpi and a radius, both from the left side of this si)ecies, 
together with the anterior moiety of a right scapula, agree exactly with the cor- 
responding bones of a specimen of this Duck in the collection.s of the S. National 
Museum (No. 18,598). Length of carpo-metacarpus 5‘9 millimetres ; length of radius 
74 millimetres. There were no fossil bones of the Mallard in the Condon material. 
Cope collection : Equus Beds of Oregon. 
Anas Americana. 
Fossil bones of the Baldpate are not abundant in the collection, hut a right 
coracoid and a left tarso-metatarsus are identical in all their characters with the cor- 
responding bones of an example of this Duck in the osteological collection.s of the 
U. S. National Museum (No. 18,599). Extreme length of coracoid 4 ’9 millimetms. 
The low bulky hypotarsus of the tarso-metatarsus is once perforated and twice 
grooved for tendons. Length 4-2 millimetres. 
Cope collection : Equus Beds of Oregon. 
Anas carolinensis. 
Numerous fossil bones of the Green-winged Teal were di,scovered, and 1 com- 
pared a number of them Avith the corresponding bones of a skeleton of the .x|H'cit*s 
in my private collection. These consisted of five humeri, two perfect (left side), 
and three imperfect (right side), also three coracoids, two ulna*, a cariMHiietacarpii.s, 
and a tarso-metatarsus. They agree in their characters quite as closely a.s do the 
corresponding bones taken from tivo specimens of this Duck as it iioav exist.s, ami 
compared together 1 am inclined to believe that the species was a numerous one in 
former times, or during the later tertiary period. Length of humerus <10 mm. ; 
length of ulna 50 mm.; length of coracoid 35 mm. 
There is a humerus of the Green-Avinged Teal in Professor Condon’s collection. 
It is from the right limb of the individual to Avhich it belonged. 
Cope collection : Equus Beds of Oregon. 
Anas discors. 
A perfect humerus and other bones of the pectoral limb, together with several 
coracoids represent this Teal in the collection. The humerus is someAvhat shorter 
than the same bone in a skeleton of the species in my private collection, an old 
female. The fossil humerus probably belonged to a subadult specimen of a female ; 
53 JOUR. A. N. S. PHILA., VOL. XI. 
