74 



THE MUSCLES. 



origin the fibres pass forwards and outwards to be inserted in two 

 portions, the anterior set into the arch and the posterior set into the 

 transverse process of the last vertebra. TJie former may be re- 

 garded as m. inter cm rails ^ the latter as tn. intertmnsversaritix. 

 Fig. 67. 



37. (3) 31. coccyyeo- 

 iliacus (Fig. 67 c.i.). 



This muscle arises 

 from nearly the whole 

 length of the lateral sur- 

 face of the urostyle, the 

 anterior portion being 

 concealed by the preced- 

 ing muscle. The fibres 

 pass outwards and for- 

 wards to be inserted into 

 the anterior two-thirds of 

 the inner surface of the 

 ilium. 



38. 31. ilio-li(>nbarix 

 (Klein), (Fig. 67 il.). 



Duges, n. 51, transverso-ili- 

 aque. Cuvier, Zenker, 

 etc., qnadr. hunborum. 



Evidently represents 

 the quad rat us Itunlorum 

 of human anatomy; it 

 takes its origin from 

 the anterior extremity 

 of the ilium, and runs 

 forwards to be inserted 

 into the transverse pro- 

 cesses of the vertebrae 

 from the seventh to the 

 fourth. 



c.i. 

 c.l. 

 fj.l. 

 i 



Muscles of the back and i>elvic girdle of Rana csculcnta. 



M. coccygeo-iliacus. 



M. coccygeo-sacralis. 



M. glutaeus. 



MM. intertransversarii. 

 i' MM. intercrurales. 

 i.c.i. M. intertransv. capitis iriferior. 

 i.e.*. M. intertr. cap. sup. 

 il. M. ilio-lumbaris. 

 Ig.d M. longissimus dorsi. 

 o.t. M. obliq. interims. 

 t M. temporalis. 



