82 THE SALAMANDER 



separates into six tendons, which are inserted on either side of the 

 bases of the metacarpals of each of the three ulnar fingers. Occasion- 

 ally a seventh tendon may be present which is then inserted on the 

 post-axial side of the base of the first metacarpal. 



Innervation : From the N. dorsalis manus ulnaris, by twigs passing 

 between the extensor muscles of the ulnar and radial sides of the 

 fore-arm. 



Function : As its name implies it is the common extensor of the 

 hand. 



M. extensor antihrachii et carpi radialis (m.e.a.c.r.). Eisler (1895); 

 Ribbing (1907). 



Extensor carpi radialis (28) Carus (1828). 



Gemeinschaftlicher Heber Meckel (1828). 



Epicondylo-carpien; Sus-epicondylo- radial . . Duges (1834}. 



Extensor carpi radialis . Rymer Jones (1852); Schmidt, Goddard, and 



van d. Hoeven (1864); Osawa (1902). 

 Abductor ....... Stannius (1854-6). 



Supinator longus and brevis .... Rudinger (1868). 



Supinator Mivart (1869). 



Radial section of the superficial stratum representing the Supinator longus 



and brevis, and the Extensor carpi radialis . Humphry (1872). 



Humero-radialis dorsalis . .... Hoffmann (1873-8). 



filevateur carpien interne (66); filevateur du radius (67) Perrin (1899). 



A very powerful muscle, arising from almost the whole surface of the 

 epicondylus lateralis humeri and from the strong raphe which occurs 

 between its proximal end and that of the M. ext. ant. et carp, ulnaris. 

 It has a fleshy insertion along the whole length of the lateral surface 

 of the radius with the exception of about a millimetre at the proximal 

 end (= M. ext. ant. rad.), and on the radiale (= M. ext. carp. rad.). 



Innervation : Mainly from the N. extensorius cranialis with a few 

 fibres from the N. extensorius caudalis. 



Function: In conjunction with the M. ext. ant. et carp, ulnaris and 

 the M. ext. dig. comm. it would act as an extensor muscle. Alone it 

 would tend to turn the hand into the supine position. 



M. extensor antihrachii et carpi ulnaris (m.e.a.c.u.). Eisler (1895); 

 Ribbing (1907). 



Extensor carpi ulnaris . Carus(i828); Rymer Jones(i852);Schmidt, 

 Goddard, and van d. Hoeven (1864); 

 Humphry (1872); Osawa (1902). 



Eigener Heber Meckel (1828). 



Epicondylo-cubital ...... Duges (1834). 



