THE SKELETON OF THE ANTERIOR LIMB. 161 
slender portion—the so-called neck of the scapula (collum scap- 
ulae)—connecting it with the body of the bone. It bears a concave 
depression, the glenoid cavity (cavitas glenoidalis), for articula- 
tion with the humerus. The articulating surface is borne chiefly 
on that part of the bone corresponding to the axillary border, but 
it also extends in an anterior direction 
to the base of an overhanging pro- Sil. 
jection, the coracoid process (pro- émi. 
cessus coracoideus). The free por- 
tion of the latter forms a _ blunt, Z 
hook-like projection lying toward the 5 
medial surface of the bone. 
THE CLAVICLE. 
The clavicle (clavicula) is imper- 
fectly developed in the rabbit, con- 
sisting of a slender, arcuate rod of 
bone, tipped by cartilage, which lies 
in the interspace between the manu- 
brium sterni and the head of the 
humerus. It occupies only a portion of 
this interspace, being attached me- 
dially by the sternoclavicular liga- 
ment and laterally by the cleido- 
humeral ligament. 

Fic. 67. Anterior surface of the left 
humerus: c., capitulum; c.h., head of 
a ap \\ 0 Pa alxe humerus; e.l. and e.m., lateral and 
The humerus (1 Ig. 67) IS ty pical medial epicondyles; f.r., radial fossa; 
i Lat. = r a aaa s.h., deltoid tuberosity; s.i., intertuber- 
of the long bones of the proximal cular groove; t.h., trochlea humeri; 
Bnigvmidcle See ments Of eme tore and (os and tm... lessegrand-“gredter 
THE HUMERUS. 
hind limbs in consisting of a central 
portion, the body or shaft of the bone, and of proximal and 
distal extremities for muscle attachment and articulation. The 
proximal extremity bears on its medial side a smooth, convex 
projection, the head of the humerus (caput humeri), for articulation 
with the scapula. The articulation is nominally a ball-and-socket 
