346 



ELEMENTAR Y ANA TO MY. 



[LESS. 



muscle, but its insertion may (as in the Three-toed Sloth) 

 occupy almost the whole length of the tibia. This muscle 

 may be intimately blended with an adductor, as in the Pig, 

 or more or less with the sartorius, as in the Coati. It may 

 have a special ridge on the tibia for its insertion, as in 

 Pteropus. 



FIG. 311. DEEPER MUSCLES OF OUTER ASPECT OF RIGHT PELVIC LIMB OF 

 PARSON'S CHAMELEON ; the ilio peroneal cut and reflected. 



A, adductor; Z>, biceps ; Z>', gluteus primus ; D 2 , gluteus secundus ; Z? 3 , glutens 

 tertius ; EL, extensor longus digitorum ; F~ and F^, rectus femoris ; FC, 

 femoro-caudal ; FD 1 , flexor longus digitorum ; FD 2 , flexor tertius digitorum ; 

 G, gracilis ; GE, gastrocnemius externus ; IP, ilio-peroneal ; P, peroneus ; 

 S, tibial adductor : S M , semi-membranosus ; VE ', vastus externus ; A r , gluteus 

 maximus ; y, tendon of femoro-caudal. 



The pectineus and adductors of man may exist, in other 

 animals, as muscular masses of very different size and some- 

 times in different divisions from what they exist in him. The 

 adductors may be extraordinarily small and feeble, as in the 

 Seal. 



