1907.] ANATOMY OF THE PELOBATID^E. 893 



of Rana guppyi is cut aci-oss and reflected, the stei^nohyoid is 

 exposed from its origin from the xiphoid end of the sternum up 

 to where it dips under the shoulder-girdle anteriorly to reach the 

 hyoid. In Xenophrys (text-fig. 236) the disposition of this 

 muscle is as in Megalophrys nasuta, but with some slight dif- 

 ferences of detail. When the pectoralis posterior is cut aci-oss 



Text-fie-. 236. 



i\ 





'St. 



Rtenuim and iidjacent musculature oi Xenoplirys monticola. 



a.' Specialised tract of rectus abdominis muscle attached by a tendon to border of 

 coraeoid. h. Scapular portion of obliquus. p. Pectoralis abdominalis exit 

 across antei'iorlj'. r. Rectus abdominis, st. Sternum. 



and reflected, the sternohyoid is in the same way brought into 

 view. The sternal portion of it, i. e., that which ai-ises from 

 the xiphoid process of the sternum, runs anteriorly on each 



60* 



