MTOLOGY OF REPTILES. 



239 



154 



humerus, and is inserted into tlic carpus near the uhia. The 

 radkdk intcrnus, fig. 154, 7o, arises from the tuberosity above the 

 outer condyle of the humerus, and is inserted into the distal end 

 o± the radius. The radialis cxternus longus, 

 fig. 152, 76, arises from the tuberosity above 

 the internal humeral condyle, and is inserted 

 into the radial margin of the carpus ; the 

 muscle converging towards 76, in the same 

 figure, is the radialis iiiteriius. The radialis 

 exterrms hrevis, fig. 150, 77, arises from the 

 tuberosity above the internal hrnneral condyle, 

 and is inserted into the back of the carpus. 

 The supinator longus, figs. 152, 15.3, 78, arises 

 above the internal humeral condyle, and is in- 

 serted into tlie radial side of the carpus and 

 the same border of the radius. The siijiinatur 

 hrevis, fig. 152, 79, arises from the tubercle 

 above the inner humeral condyle, and is in- 

 serted into the back of the radius. The extensor 

 communis digitorum, fig. 151, 80, arises fi'om tlie 

 tuberosity above tlie inner humeral condyle, and is inserted into 

 the five metacarpals. The extensor proprius poUicis, fig. 150, 81, 

 arises from the ulna, and is inserted into the metacarpal of the 

 pollex. The extensor projn'iiis digiti minimi, fig. 152, 82, arises 

 from the ulnar side of the carpus and is inserted into the meta- 

 carpal and first phalanx of the fifth digit. The extensores Ijreoes 

 digitorum, figs. 151, 153, 83, arise from the back of the carpus 



f fi.rof.iot, Ewjia 

 LCit. ixwixi. 



and metacarpus, and are inserted into the distal phalang 



The 



abductor pollicis, fig. 153, 84, arises from the 

 inner side of the carpus, and is inserted into 

 the first phalanx of the pollex. The flcxores 

 breves digitorum, fig. 153, 88, arise from the 

 palmar sesamoids and fascia, and are inserted 

 into the phalanges. There are also, iiiterossei, 

 both external and internal ; the latter are shown 

 at 90, figs. 154 and 155. The adductores digi- 

 torum, fig. 155, 86, are limited to the first, 

 second, and third fingers, to the metacarpals of 

 which the muscles incline, radiad, from the 

 second row of carpals. 



Tlie following are the muscles of the pelvic 

 arch and limb : — 



The uttraliens pelvhn, figs. 150, 153, 43, arises from contiguous 



Miiwcles i>t fore-root, 

 Eiinj^ EurOiiKii. XXXVIII. 



