94 



INTRODUCTIOX. 



Plate III. Bones and Muscles of the Wing of the Domestic 

 Pigeon, Cokimba Livia. 



Fig. 1. Bones of the Wing. 



a, scapula. 



h, tip of coracoid bone. 



b, c, OS humeri or arm-bone. 



c, d, cubitus or ulna and radius. 



d, carpal bones. 



d, e, metacarpal bones. 



e,f, the two phalanges of the finger. 



g, pollex or first finger. 



Fig. 2. Muscles seen on the upper side 

 of the Wing. 



a, the body. 



b, c, humerus or arm. 



c, d, cubitus or fore-arm. 



d, e, f, g, hand. 



1, trapezius. 



2, serratus magnus anticus. 



3, latissimus dorsi. 



3, a, its anterior portion. 



3, bf its posterior portion. 



4, pectoralis major. 



8, supra-spinatus. 



9, infra-spinatus. 



10, deltoides. 



11, tensor plicae alae. 



12, retractor plicae alae. 



13, flexor cubiti, or biceps flexor. 



14, extensor cubiti. 



16, flexor carpi ulnaris. 



22, extensor carpi ulnaris. 



23, extensor primi digiti. 



24, extensor digitorum. 



25, extensor carpi radialis brevis. 



27, adductor primi digiti. 



28, abductor primi digiti. 



29, abductor digiti. 



30, adductor digiti. 



31, supinator or extensor digiti. 



Fig. 3. Muscles seen on the lower side 

 of the Wing. 



a, the body. 



b, c, humerus. 



c, d, cubitus. 



d, e,f g, hand. 



4, pectoralis major, 



11, tensor plicae alae. 



12, retractor plicae alae. 



13, biceps flexor. 



14, extensor cubiti. 



15, extensor metacarpi radialis longior, 



or supinator radii longus. 



16, flexor carpi ulnaris. 



17, palmai-is longus. 



18, flexor digitorum. 



19, flexor carpi radialis. 



20, extensor carpi. 



21, pronator radii teres. 



26, flexor primi digiti. 



27, adductor primi digiti. 



28, abductor primi digiti. 



29, abductor digiti. 



30, adductor digiti. 



Fig. 4. Muscles concealed by the pec- 

 toralis major. 



5, pectoralis medius. 



6, pectoralis minor. 



7, clavicularis. 



