MTSt'LES i >F THE SKIN. 



119 



sixth, ami uiuth will adduct towards this line. If we compare 

 them with those of man (in whose case the second toe affords the 

 central line), those of the first group must be regarded as mm. iitfer- 

 dorsales, of the latter as ji?ant-ares. Duges holds all these 

 ta&TOMM (with the exception of the first, abductor Lreri* dig. 1] to 

 be m tn. intero*$ei dorsales (metatarso-sus-phalangettiens, n. 210, 211, 

 212, 214, 215, 216, 218, 219). Those which I have described as 

 flexore* proprii digit or ton, he regards as intero^ei volares. 



V. MUSCLES OF THE SKIN. 



196. J/. cutametts pecforit (Fig. 95 c/j). 



Duges, abdomino-guttural, n. 53. Klein, abdomino-cutaneus. Zenker. 

 subcutaneus pectoris. 



This is an elongated quadrangular muscle, attached by its hinder 

 margin to the side of the xiphisternum, and to the superficial 

 surface of the aponeurosis of the in. oWifjim* exteriiu*. The fibres 

 course forwards and 



slightly outwards to be *'= 95- 



inserted, at a very acute 

 angle, into the skin : lying 

 between the two muscles 

 and attached to them on 

 either side is a thin t 

 cia, which, together with 

 the muscles and the wp- 

 ttnti t/toraririmt. assists in 

 closing a triangular space 

 between these structures 

 and the deeper muscles. 



The thinness and trans- 

 parency of this muscle 

 render it especially suit- 

 able for the investigation 

 of nerve-terminations T . 



197. 31. citfaiieux dorsi (Fig. 96 cd). 



Duges, pubio-dorso-cutane. n. 56. Zenker, cutaneus iliacits. 



This muscle has a narrow origin in the space between the muscles 



1 Kolliker, Mikrosk. Anatoinie, 1866, vol.11, i.p. 247; Reichert, Miiller's Archiv, 

 1851, p. 29, PI. I ; Kolliker, Untersuchungen iiber die letzten Endigungen der Xerven 

 in den Muskeln des Frosches ; Leipzig, Engeknann. 1862. 



Pectoral region of RatM (tcuUiil.a. 

 /< M. cutaneus pectorU. 

 I/" Port. abdominaJis of the m. pectoralU. 



