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 — 

 1/2 natural size. 



Fig- 153- Sternum, thin parts lack- 

 ing — 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. 



