108 



DESCRIPTION OP OPPOSITE PLATE. 



Prom A to B, cervical vertebrae. 1, spinous process of the 

 third vertebra; 2, inferior ridge on body of the same; 

 3, styloid prolongation of the transverse process of the 

 same; 4 vertebral foramen of the same; 1', 2', 3/, 

 4', the same parts in the twelfth vertebra. From B to C, dor- 

 sal vertebrae; 6, spinous process of the first; 7, crest formed by 

 the union of the other spinous processes. Prom D to E, coccy- 

 geal vertebrae. F, G, head; 8, interorbital septum; 9, foramen 

 of communication between the two orbits; 10, premaxillary 

 bone; lO', external openings of the nose; 11, maxilla; 12, os 

 quadra tum; 13, malar bone; H, sternum; 14, brisket or keel; 

 15, episternal process; 16, internal lateral process; 17, lateral 

 external process; 18, membrane which closes the internal notch; 

 19, membrane of the external notch. I, etc., superior ribs, 20, 

 posterior process of the fifth; J, inferior ribs; K, scapula; L, 

 Coracoid bone; M, forculum — m, m, its two branches; N, hum- 

 erus; O, ulna — o, radius; P, P', bones of carpus; Q. Q', bones 

 of metacarpus; R, first phalanx of the large diget of the wing. 

 r, second phalanx of the same; R, phalanx of thumb; S, ilium, 

 s'. ischium, s", pubis, 21, sciatic foramen, 22, foramen ovale; 

 T. femur; U, patella; V. tibia, x, fibula, y. single bone of tarsus; 



Y. metatarsus. 23. superior process represpnting a unitf^d 

 metatarsal bone; 24, process supporting the claw; z, etc.. digits. 

 — Chauveau. 



