280 Dr. J. Murie on the Genus Colius. 



angle ; a, angle of mandible ; d s, dentary space ; o /, orbital limb ; and » k, 

 internal knuckle of the quadrate. 



Fig. 9. The runip-bouea and tail, or pelvis and caudal vertebrae, shown 



laterally. 

 Fig. 10. Interior view of the same parts. 

 Fig. 11. Upper or dorsal surface of the same. 



Points in the anatomy of the pelvis &c. are specified as subjoined : — 

 il, il*, ilium, its anterior and posterior divisions ; is, ischium ; t, tube- 

 rosity ; sp, spine of same ; p, os pubis ; a, acetabulum ; f, facet ; o, obtu- 

 rator notch or foramen ; if, ischiatic or thyroid foramen ; sa, coalesced 

 sacral vertebrae ; cd, caudal vertebras ; p)/, pygostyle ; dotted line indi- 

 cates its natural position. 



Fig. 12. A side view of the sternum and shoulder-girdle. 

 Fig. 13. The inferior pectoral surface of the same. 



The parts lettered in these two figures are : — 



k, keel ; r, rostrum ; m x, middle xiphoid ; i x, internal, and e x, external 

 xiphoid process, the spaces corresponding ; c^j, costal process ; co, cora- 

 coid ; ep, epicoracoid ; /, furcula ; hy, hypocleidium ; sc, scapula ; g, gle- 

 noideum or articular facet. 



Fig. 14. Left upper wing-bone or humerus, seen from behind. 

 Fig. 15. Its superior end (shoulder-joint). 

 Fig. 16. Its lower end (elbow -joint). 

 Fig. 17. The remainder of the wing-bones. 

 Fig. 18. Upper radio-ulnar articulation. 



Letters have the undermentioned signification : — 



h, head of humerus ; pn, pneumatic foramen ; u, ulna ; r, radius ; c' 

 and c^, first and second carpal bones ; m^ and wt^, first and second meta- 

 carpals; d^, d^, and cP, digits, first, second, and third, respectively. 



Fig. 19. Thigh-bone of the right side, front view. 

 Fig. 20. The left tibia in profile, outside view. 

 Fig. 21. Tibia and fibula, anterior aspect. 

 Fig. 22, Posterior aspect of the same. 

 Fis:. 23. Posterior surface of the left tarso-metatarse. 

 Fig. 24. Profile of the same, seen from without. 

 Fig. 25. The left tarsus and foot, seen from behind. 

 Fig. 26. Upper articular surface of the tarso-metatarse. 

 Fig. 27. Lower articular end of the same. This and preceding enlarged 

 to about double their natural dimensions. 



The lettering runs : — 



t, tibia ; /, fibula ; e, bony eminence or tuberosity ; tin, tarso-meta- 

 tarse ; m, metatarsal piece ; i, ii, iii, iv, digits ; ca, calcaneal tuberosity 

 or " hypotarsus." 



