﻿ossicle and 



102 DR J. MURIE ON THE THREE-BANDED ARMADILLO. 



lower Dart of the tibia, and continues on to the sole, broadening out as it is transformed 

 into a thick solid sesamoid ossicle. The ossicle is 0-25 inch long, nearly flat, or but very 

 sU^htly rounded on the surface, but wedge-shaped deeply, and with a bursa between it 

 and the tarsal bones. Prom the distal end of the plantar bone five tendons, placed 

 semicircularly, arise ; they go to the 1st, 2nd, 3rd, 4th, and 5th digits respectively. 

 Excepting the fifth, which is a small one, they are very broad and strong, and each has 

 small sesamoidei previous to insertion. 



With the exception of an extensive fibular origin,, this long compound flexor has essen- 

 tiaUy a simUar arrangement, in Dasypus 6-cmctus (Huxley, MS. notes, and Galton 

 p. 557). Hyrtl (in mem. cited, p. 41) takes cognizance of the plantar 

 nexion with long digital flexors in D. setosus (=the 6-banded species), in !>. novem- 

 cinctus {=Tatmia peba), and in D. gijmnurus (^Xenurus unicinctus), remarking of 

 ChlamT/dophoms that it possesses a trihedral cartilaginous nodule in place of the hone, 

 the distal tendons, however, being five in number. 

 In the hind foot of this specimen of Tolypeutes conuriis there were three lumhricales : 

 the first from the superficial and ulnar side of the second tendon of the flexor longus, 

 and which is inserted into the fibular side of the same digit ; the second lumbricalis 

 springs from between the second and tliird tendons, and is inserted upon the ulnar side. 

 of the thkd digit ; the third lumbrical belly arose from between the third and fonrtli 

 flexor tendons, and it ended upon the fibular side of the third digit. 



In his account of the anatomy of the six-banded Armadillo, Prof. Huxley* stated he 

 met with six lumhricales in the left foot : — one to the fibular side of the hallux ; one to the 

 tibial side of the second toe, and another to its fibular side ; one to the tibial side of the 

 third digit ; one to the tibial side of the fourth toe ; and, lastly, one to the tibial side of 

 the fifth toe. In the right foot of the same animal there were seven lumhricales in all, 

 the additional one going to the fibular side of the fourth toe. Mr. Galton^ recounts 



r 



having found seven lumhricales, with an arrangement corresponding to the right foot in 

 Iluxlcy's specimen. Cuvier's drawing, pi. 260, does not justify conclusions therefrom; 

 and Hyrtl, while admitting plantar lumhricales in the curious Chilian Pichiciago, leaves 

 their number and insertions untold. 



The tibialis posticus has origui by a somewhat laterally compressed aponeurotic tendon 

 from the head of the fibula, and by fleshy fibres from the back of the shaft of the tibia 

 to thn inner side and below the popliteus, as far as the upper end of the lower fom'th of 

 the shaft. Its tendon, rather a strong one, glides in a separate groove behind the 

 inner maUeolus, passes beneath the internal lateral ligament, and is inserted into the in- 

 ternal cuneiform bone. The small extra tibialis posticus of Owen is also present. This 

 arises perfectly separate from the last, viz. from the inner malleolus, as a slight muscular 



Wi^T '^ "" ^'^'^'"^ '''*'' *^^ ^^^'^ ^'^^ P'''^'^'' ""^ ^^""^ ^^ *^^ proximal end of tbe 



If 



t J''?^"?/ '^ ^""^^^ **'*^' P^^t^'^'^ ^"loiiS tlie DasypodidK would seem rather to be 

 rule than the exception. Owen', as above Unted, distinctly notes its having been met 



' MS. note, of Extern, lecture., I860. « U. p. 663. ' P. Z. S. 1 832, p. 138. 



