1882.] ANATOMY OF PROTELES. 585 



Viverra, but resembles that of H. striata, in the possession of only 

 a single head of origin, the reflected head being absent. 



The soleus in Proteles, as in //. crocuta, is absent, whereas in 

 Viverra that muscle is present. 



The plantaris resembles the corresponding muscle of H. crocuta, 

 and differs from that of H. striata and Viverra inasmuch as it is 

 not prolonged to the sole of the foot. 



The popliteus is of relatively smaller size in Proteles than in H. 

 crocuta, the belly of the muscle being confined to the upper third of 

 the tibia. 



The tibialis posticus of Proteles resembles that of Viverra in the 

 possession of a fii)iilar head of origin. This head is absent in H. 

 crocuta. The tendon of the muscle in the latter is inserted into the 

 entocuneiform and scaphoid bones ; whereas in Viverra and Proteles 

 it is inserted into the scaphoid bone alone. 



The flexor brevis digitorum is represented only by tendon, as m 

 H. crocuta, but differs from the latter inasmuch as that tendon is 

 quite continuous with the plantaris. In H. striata and Viverra the 

 flexor brevis digitorum has a distinct muscular belly. 



The origin of the Jiexor longus digitoinnn in Proteles differs from 

 that of H. crocuta inasmuch as its inner head arises not only from 

 the head of the fibula, but also from the oblique line of the tibia. 

 The outer head arises, as in H. crocuta, from the fibula alone. In 

 Viverra, on the other hand, the outer head of the flexor longus is 

 attached to both bones of the leg. 



TXw flexor accessorius is absent. Proteles in this respect resembles 

 H. striata and differs from H. crocuta and Viverra. 



The lumbricales of Proteles resemble those of H. crocuta in being 

 three in number. They are inserted into the second, third, and 

 fourth toes. The inner toe has no lumbrical muscle. In Viverra 

 there are four lumbrical muscles. 



Tiie tibialis anticus in Proteles resembles that of H. crocuta in 

 having two tendons, one of which is inserted into the entocuneiform, 

 the other into the first metatarsal bone. In Viverra the origin of 

 this muscle differs from that of Proteles inasmuch as it arises from 

 both bones of the leg, and has only one tendon of insertion, which 

 is inserted into the first metatarsal bone. 



In Proteles, as in H. crocuta, the extensor hallucis is represented 

 merely by a slip from the tendon of the tibialis anticus. In Viverra, 

 on the other hand, the muscle is well developed. 



The tendon of the extensor longus digitorum of Proteles divides, 

 as in Viverra, into four slips for the four anterior toes. In H. cro- 

 cuta there are only three slips, which are inserted into the second, 

 third, and fourth toes. 



The extensor brevis digitorum of Proteles differs from that of H. 

 crocuta and H, striata in giving off only two tendons, which pass 

 to the second and third toes. In Hycena three tendons are given 

 off by this muscle, which are inserted into the second, third, and 

 fourth toes, while in Viverra there are four tendons, which pass to 

 the four inner toes. 



