FIG. 144. Skeleton of a Bird (Common Fowl.) 1, prem axilla; 2, nasal; 3, 

 lachrymal; 4, frontal; 5, mandible; 6, lower temporal arcade in region of quad- 

 ratojugal; 7, tympanic cavity; 8, cervical vertebrae; 9, ulna; 10, humerus; .11, 

 radius; 12, carpometacarpus; 13, first phalanx of second digit; 14, third digit; 

 15, second digit; 16, ilium; 17, ilio-ischiatic foramen; 18, pygostyle; 19, femur; 

 20, tibio-tarsus; 21, fibula; 22, patella; 23, tarso-metatarsus; 24, first toe; 25, 

 second toe; 26, third toe; 27, fourth toe; 28, spur; 29, pubis; 30, ischium; 81, 

 clavicle; 32, coracoid; 33, keel of sternum; 34, xiphoid. The forked bone in front 

 of 7 is the quadrate. (From Shipley and McBride.) 

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