Vol. 6 J Miller: Condor-like Vultures of Rancho La Brea. 1 1 



plane of the shaft almost exactly and shows no deflection to either side. 

 The inner trochlea is second in size though but slightly larger than the 

 outer. The two intertrochlear spaces are about equal. 



Table of measurements of Gymnogyps calif ornianus taken from a series 

 of fourteen tarsi excavated at Rancho La Brea. 



Maximum. Minimum. Average. 



Total length over all 



] 31.4 mm. 



120.0 



123.7 



Least transverse diameter of shaft 



15.0 



13.2 



14.28 



Sagittal diameter at middle of shaft 



11.2 



8.8 



10.1 



Greatest transverse diameter of head 



30.1 



26.5 



28.01 



Greatest transverse diameter throug 









trochleae 



33.2 



30.7 



32.09 



SARCORHAMPHUS CLARKI, n. sp.s 



Type specimen 12588, Univ. Calif. Col. Vert. Palae. Tarso- 

 metatarsus. 



Shaft narrower and more nearly cylindrical than in Sarcor- 

 hamplius gryphus, less excavated in front : intercotylar tuberosity 

 more prominent ; proximal foramina much nearer together. 



The type specimen was excavated at Rancho La Brea by 

 the author in an exposure fifty feet north of that worked by 

 the University of California. It was added to the University 

 collection and taken as the type of this species because of its 

 perfect preservation. It is here compared with a specimen of the 

 present species 8. gryphus from the Museo de La Plata. The 

 Recent specimen bore no data as to age or sex. The facial part 

 of the skull was still covered with the natural skin. There ap- 

 peared no caruncular outgrowth and a sparse, hairlike feath- 

 ering was just evident. This suggestion of immaturity is offset 

 by the firm ossification of all the bones and normal size of the 

 tarsal foramina. If S arc orham pints resemble Gymnogyps in the 

 feathering of the head during the first two or more years of life, 

 this specimen might be assumed to represent a bird in its second 

 to fifth year of age. Youth of the individual in Cathartes 

 reduces the tarsus in its actual size and in its relative width. 

 The specimen of the Recent Sarcorhamplius at hand, then, may 

 be assumed to display a greater degree of slenderness in the 



3 This species is named in honor of Dr. F. C. Clark of Los Angeles, 

 Calif., in recognition of valued assistance rendered by him in the studies 

 here recorded. 



