LOXORNIS 229 
much variation from Pelecyornis except that the coracoid 
is considerably shorter and wider, and there is a slight 
variation in the lower end of the tibio-tarsus. “These then 
are the bases of the generic name. 
Loxornis clivus Ameghino 
L. clivus Amegh., 1895, Bol. Inst. Geog. Argen., t. 15, p. 595. 
Under this name Ameghino has described the lower end 
of a tibio-tarsus, a figure of which I reproduce here. This 
is of a size to complete the tibio-tarsus which we found, 
lacking the lower end, and agrees in size with the other 
Fig. 152. Humerus— Fig. 153. Sternum, thin parts lack- Fig. 154. Coracoid— 
1/2 natural size. ing—1/2 natural size. 1/2 natural size. 
bones which we found, so that I shall describe my material 
under this name. ‘The species is in size comparable to 
Pelecyornis tubulatus with which it agrees closely. 
We found the upper four-fifths of a tibio-tarsus, associa- 
ted with part of the fibula, the sternum, the humerus, and 
the coracoid; a second specimen consisting of a complete 
tarso-metatarsus, and fragments of the pelvis, vertebrae 
and wing bones; a third specimen consisting of part of the 
tibio-tarsus, and various fragments; a fourth consisting of 
a femur, and lastly two toes; all evidently representing 
one species, which in most respects is almost identical with 
Pelecyornis tubulatus. These all came from the Chico del 
Chubut, west of Puerto Visser. 
