30 ELEMENTARY SKETCH OF THE OSTEOLOGY OF BIRDS. 



Plate I. 



(EXPLANATION.) 



Skeleton of Corvus jamaicensis : copied from plate 142 of 

 M. M. Edward's " Oiseaux fossiles de la France." 



ca. carpus. 



cor. coracoid. 



cr. cranium. 



c. V. cervical vertebrsB. 



c. yt. caudal vertebrae. 

 ex. coccyx. 



d. V. dorsal vertebrae. 

 f. femur. 



fi. fibula. 



fu. furculum (clavicles.) 



h. humerus. 



1. lachrymal. 



mn. mandible. 



m. 1. 1st metacarpal. 



m. 2. 2nd do. 



m. 3. 3rd do. 



na. nares (external.) 



o. orbit. 



1 g r proximal phalanges of 

 *^i ■ o< 2nd and 3rd digits ©f 

 " * (^ manus. 

 pi. pelvis, 

 p. mx. premaxillae. 

 p. u. processus uncinatus. 

 r. rib. 

 ra. radius, 

 sc. scapula, 

 sm. sacrum. 

 st. sternum, 

 t. tibio-tarsus. 

 t. m. tarso-metatarsus. 

 ul. ulna. 



1 1st digit of foot, 

 II 2nd do. 



III 3rd do. 



IV 4M do. 



