1874.] 



MYOLOGY OF PHRYNOSOMA. 



79 



\SrT t0 AV a f2°T S (fig - U PRL -) * this a "^s from the 

 inner condyle of the humerus, and passing obliquely down the arm 

 .s mserted into the distal extremity Jf the radius^the sJcond 



Fig. 3. 



ECU. 



Superficial muscles on the dorsal aspect of anterior half of the body, x 3. 



Pronator radii brevis (fig. 1, P.R.b.) : this arises from the outer 

 side of the internal condyle covered by the last, and is inserted into 

 the lower end of the proximal third of the radius. This latter appears 

 to correspond to the pronator accessorius of the Iguana tuberculata 

 m which species, according to Mr. Mivart, both muscles are repre- 



