M. INDICATOR. 271 



Insertion. The muscular fibers continue to within 1 cm. of the wrist ; the tendon, 

 about 4 mm. wide, passes over the distal end of the ulna, is connected with ligaments, and 

 is inserted upon the tubercle at the caudal side of the proximal end of the minimal meta- 

 carpal. 



M. INDICATOR. 



700. Synonymy. The extensor indicia or indicator, Q., A, I, 220 ; extensor indicts, 

 G., A, 418 ; "indicator," Dunglison, A, 676 ; " indicateur," S.-D., A, II, 867 ; ext. indicis 

 and ex. secundi internodii pollicis, Miv., B, 152. 



Origin. By fleshy fibers along the cephalic border of the ulna, from the lesser sigmoid 

 notch to the junction of the distal and middle thirds of the bone, exclusive of the olecranon. 

 The proximal third of the muscular portion resembles the ordinary antebrachial muscles, 

 and is continuous with a slender tendon ; the remaining fibers form a thin, loosely con- 

 nected series of bundles extending distad at an angle of about 45 degrees with the bone to 

 be attached to the tendon almost to the wrist. 



Insertion. At the wrist the tendon divides into two, both of which are connected with 

 the indical tendon of the extensor communis. The more caudal of the two tendons some- 

 times receives a small tendinous slip from the medial tendon of the extensor minimi. In 

 some cases the tendon divides into three, which are distributed respectively to the medius, 

 the index and the second segment of the pollex. 



M. PRONATOR TERES. 



701. Synonymy. The human pronator radii teres, Or., A, 411, Q., A, 1,209; "rond 

 pronateur," S.-D., A, II, 357 ; pronator teres, Miv., B, 149. 



Figures. Caudal aspect (75) ; origin area (70, 71). 



Origin. By a short, strong tendon from the extremity of the epitrochlea just distad 

 of the origin of the short division of the entotriceps. 



Insertion. By fleshy and short tendinous fibers for about 1.5 cm. along the cephalic 

 border of the radius at its middle. 



M. FLEXOR (CARPI) RADIALIS. 



702. Synonymy. The human flexor carpi radialis, G., A, 411, Q., A, I, 210 ; " cer- 

 cialis," S.-D., A, II, 362 ; flexor carpi radialis, Miv., B, 149. 



Figures. Caudal aspect (75) ; origin area (70). 



Origin. By fleshy and short tendinous fibers from the distal aspect of the epitrochlea. 



Insertion. The muscle becomes tendinous about 2 cm. from the wrist, passes deeply 

 entad of the surface, and, according to Straus-Durckheim, divides into two tendons which 

 are attached to the indical and medial metacarpals. 



% 703. Other Muscles. In addition to the muscles described in the foregoing pages, 

 the figures indicate more or less fully the position and connections of the following : MM. 

 supra-cervico-cutaneus and cermco-auricularis (66) ; temporalis, masseter, digastricus and 

 splenius (67) ; sterno-hyoidem, sterno-thyroideus, rectus and ectobliquus (abdominis) (72) ; 

 intercostales, rectus, ectobliquus, splenius and sterno-liyoideus (73) ; flexor ulnaris and flexor 

 diffitorum communis ectalis (75). 



The muscles just named, together with all others of the cat, are more or less fully 

 described by Straus-Durckheim, and most of them are at least enumerated by Mivart. 



