2 Superior view of the skull of the Californian condor or 

 vulture ( G y m n o g y p s califorianu s); adult ; natural 

 size; mandible articulated. This skull was removed from a 

 mounted specimen, which accounts for the supraoccipital promi- 

 nence having been cut away. 



3 Superior view of the skull of the South American condor 

 (Sarcorhamphus gryphus); adult ; natural size ; mandible 

 articulated. What apparently appears to be a large shot hole is 

 seen in the frontal region. A side view of this skull is given in my 

 Osteology of the Cathartidae, [Hay den's 12th An. Rep't, pi. 20, 

 fig. 113], with a description in the text. 



140 



