626 GEOLOGICAL SURVEY OF THE TERRITORIES. 
PLATE III. 
Various bones of the skeleton. 
Fic. 7. Anterior view of skull, the lower mandible having been removed. 
Fic. 8. H, humerus; i, ulnar tubercle ; i’, oblique tubercle for radius and ulna; h, 
radial crest; S A and S’ 4’, scapular arch; S and S’, scapula; C and C’, clavicle; Cr 
and Cr’, coracoid ; f, perforating foramen. 
Fic. 9. H’, humerus; kh’, radial crest; p f, pneumatic foramina; S A” and S A’, 
scapular arch; S’’ and S’”, scapula; C@” and C’”’, clavicle; Cr’’ and Cr’, coracoid ; 
jf’, perforating foramen. 
Fig. 10. H 4A, hyoid arch; a, superior view of atlas; a', the same viewed laterally ; 
b, the axis; 0, its odontoid process. 
Fic. 11. Right carpus of Bubo virginianus, outer aspect, with the bones composing 
it moved partly from theirnormal positions to show articulating surfaces; rd, radius; 
ul, ulna; s, scaphoid; c, cuneiform; m, metacarpus; d, index digit. 
Fic. 12. Right radius and ulna, Speetyto, inner aspect; wv, ulna; 7, radius; y, articu- 
lar facet for oblique tubercle of humerus; y’ for ulnar tubercle of humerus. 
Fic. 13. The same bones, inferior surface, when in position and the wing closed ; 
7’, radius; w’, ulna. 
Fie. 14. Posterior surface, right metacarpus. The differences in form and position 
of such portion of the articular surface in the metacarpus as is shown by Zz and 2’, in 
Figs 11 and 14, between Bubo and Speotyto, are here seen; flat and rounded below in 
the first, prominent and pointed in the second. 
Fig. 15. Anterior surfaces, right tibia and fibula; F, fibula; 7, tibia. 
Fia. 16. Posterior surfaces, same bones; F’, fibula; 7’, tibia. 
Fig. 17. Right femur; v, posterior surface; v’, anterior surface. 
Fic. 18. Anterior surface, right tarso-metatarsus; m, bony bridge over tendons; J, 
foramen for anterior tibial artery ; e, facet for outer toe, f, for middle, and ¢ for inner 
toe. 
Fic. 19. Posterior surface same bone: j’, the foramen for the anterior tibial artery ; 
e facet for outer toe, d’’ for middle, and ¢” for inner toe; k, facet for os metatarsale 
accessorium. 
Fig. 20. A, right os metatarsale accessorium, superior surface; B, base or inferior 
surface of right tarso-metatarsus; e', facet for outer toe,?, for middle, and ¢’ for inner 
toe. The section of the shaft shows just above the middle facet, on the posterior as- 
pect, ranging near the middle third of the bone. 
