170 DR. B. C. A, WINDLE AND MB, F. G. PARSONS ON THE [Mar. 1, 



three-quarters of the posterior surface of the fibula, from the inter- 

 osseous membrane, and often from part of the posterior surface of 

 the tibia. It is the largest of the deep flexor muscles on the back 

 of the leg, and its strong flat tendon passes behind the astragalus 

 and below the sustentaculum tali into the sole, where it is joined by 

 the flexor tibiahs tendon (see lig. 4). The conjoined tendons now 

 divide for the toes, always giving off slips for the four outer ones and 

 often for the hallux as well. In the Felida?, Cauida;, and H ysnidje 

 no slip is present for the aborted hallux ; but in the Viverrida;, 

 Ursidfe, Procyonidce, and Mustelidse the hallux receives a slip, 

 though it is often more slender than those to the other digits. In 

 Heqjestes grisens (30) we found that the slip to the hallux, instead 

 of coming from the combined flexor tendons, was a direct continu- 

 ation of the accessorius, though in Betyesles nepaJensis (29) it 

 came from the conjoined tendons as usual (see fig. 4). 



Kg. 4. 



ABD.OSS^MtT 



Q.UIN. Dig 



/LEX? TIB. 

 .FLEX.ACC. 

 FLEX. FIB. 



Plantar tendons of foot of Herpestes. 



Flexor tibialis (Flexor lovgus digiioruvi). — This rises from the 

 inner part of the posterior surface of the tibia, the fascia over the 

 tibialis posticus, and sometimes from a small part of the back of 

 the upper third of the fibula. The tendon, which is much smaller 

 than that of the flexor fibularis, passes behind the internal malleolus 

 and in the sole joins the inner side of the flexor fibularis, as has 

 already been noticed. The muscle was present and normal in 

 every animal examined. 



Lumhricales. — As a rule there are four of these muscles, but 



