62 THE SKELETON OF THE CAT. 
mandibular fossa is lined with cartilage. A slender ligament 
passes from the angular process of the mandible caudad to the 
external auditory meatus, being attached to the latter about 
8 millimeters from its medial end. This is the stylomandib- 
ular ligament. 
V. BONES OF THE THORACIC EXTREMITIES, 
Scapula (Figs. 44 and 45).—The scapula may be described 
as a flat triangular bone with one angle rounded. It lies 
Fic. 44.—ScaPuLa, LATERAL SURFACE. Fic. 45.—SCAPULA, MEDIAL 
SURFACE. 
J, fossa supraspinata; //, fossa infraspinata; 7//, fossa subscapularis; /V, fossa 
for teres major. a, vertebral border; 4, coracoid border; ¢, glenoid border; ¢, glen- 
oid angle and fossa; ¢, coracovertebral angle; /, glenovertebral angle; g, spine; 4, 
tuberosity of the spine; ¢, metacromion; 7, acromion; 4, supraglenoidal tubercle; 
4, incisura scapulze; 7, coracoid process; #, groove indicating portion of spine; 2, 0’, 
ridges for attachment of muscle-fibres. 
beneath the muscles on the lateral face of the thorax near its 
cranial end. From its lateral surface there projects a flat ridge 
(Fig. 44, g), the spine of the scapula. The ventral end of the 
ridge is free as a curved process, the acromion process (Fig. 
The ventral angle of the scapula (¢), the glenoid angle 
