CHAP, xiil.] POLYDACTYLE FOOT : MctCCtCUS. 



341 



second hallux not being represented, the condition of this specimen 

 would be nearly produced. In the same way the left pelvic girdle 

 is just what it would be if two left innominate bones were placed 

 in succession, the ischium of the " anterior " superseding the pubis of 

 the posterior. As in the foot, so in the innominate, of the portions 

 which coincide the parts belonging to the anterior are alone 

 represented. Something very like this was seen in the case, for 

 instance, of the imperfect division of vertebras in Python, No. 7. 



The chief difficulty attending this view of the nature of the 

 case is the fact that as regards the tarsus the "anterior" foot 



h'- 



-3* 



Li- 



s- 



as . 



fib 1 



nav E 



,cb 



Fig. 97. Macacus, No. 504, left leg. 

 C. S. M. 307. 



ft 1 , head by which femur articulates. 

 h 2 , supernumerary head (?). gt, great tro- 

 chanter. gt 2 , " posterior " great trochanter. 

 It, lesser trochanter, t, tibia, fib 1 , " anterior 

 fibula." fib-, "posterior" fibula (?). clc, 

 calcaneum. As, astragalus, nav, navicular. 

 nav 2 , supposed second navicular, c 1 — c 6 , 

 six cuneiform bones, c 3 , the ecto-cuneiform 

 of " anterior" foot, cb, cuboid. 



m 



