796 GEOLOGICAL SURVEY OF THE TERRITORIES. 
PLATE XIX 
Fie. 110.—Outline sketch of the left metacarpus, P. californianus (same bird), with 
pollex (K), and the bony core of the claw it bears, in situ; life size. m, metacarpus; 
d, pollex. o 
cee 111.—Furculum of Pseudogryphus californianus, size of life, from the same spe- 
cimen; viewed from the left side, showing the positions of the pneumatic foramina and 
the roughened surfaces for the attachment of ligaments. 
Fie. 112.—The last dorsal vertebra, from the same bird, life size, posterior aspect, 
showing the facets that articulate with the first sacral vertebra. pf, large pneumatic 
foramen. 
