390 



DR. B. C. A. WINnLE AND MR. F. fi. PARSONS ON THE [Apr. 6, 



Supra- and Infraspinatus. — These muscles always rise from the 

 dorsal parts of their respective fossae and are inserted into the 

 gi'eat tuberosit}^ of the humerus. The former muscle is usually 

 the larger and considerably ovei'laps the cephalic border of the 

 scapula (see fig. S). In Herpestes cfriseus (24) some of its fibres 

 are continued into the deep part of the pectoral. Macalister (IX.) 

 found the supra-spiuatus of Viverra civetta divided into two parts, 

 prescapular and spinous, but this arrangement has not been 

 recorded again. 



Fig. 8. 



PEC1 



/CUT. I 

 COR. BRACK. 



C£PS 



Ann-muscles of Ccniis familmris. 



Suhscapularis. — The subscapularis usually consists of four bundles, 

 the anterior (cephalic) two of which are bipenniform, while the 

 posterior (caudal) two contain parallel fibres. As they near their 

 insertion into the lesser tuberosity of the humerus the most anterior 

 bundle becomes superficial to the second, and this, in its turn, 

 superficial to the third. I'he fourth or most posterior bundle is 

 very distinct and rises from the axillary border of the scapula 

 ventral to and continuous with the origin of the teres major, by 

 whose nerve it is supplied. Huughton (XXI.) describes this part 

 in the Black Bear as an infraspinatus secundus, but says that it 

 may belong to the subscapularis (see fig. 8). 



Teres major. — The teres major rises from the axillary border of 

 the scapula in its dorsal third ; as has been pointed out, its origin 

 is continued towards the glenoid cavity by the fourth bundle of the 

 subscapularis. It is inserted into the anterior surface of the 



