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DR. J. MURIE ON THE THREE-B.VNDED ARMADILLO. 



. 1 • . n rprtain a-n^eement in the CUmwjdophonts. Hyrtl ' speaks of a " radialis 



externus ^^ 



I found a panaris longus of considerable size witti an inner condylar and inter- 

 muscular fasil derivation, and firmer connexion witli the flexor muscles beneath Its 

 tendon placed well to the inner aspect of the hmb ends m a powerful palmar fascia, 

 Ihich/fastened to the sesamoid ossicle, spreads more thm ly over nearly the entire palm, 

 ending m shps to the middle and outer toes. Exceptmg the slight division m this pal- 

 maris'there are no true perforated tendons to the digits. The termination of the radial 

 neiWis intimately adherent to the fascia, as alluded to in the description of the brachial 

 plexus What I may term palmaris brevis, but which, more strictly speakmg, represents 

 a flexor brevis man us ^ has rather a fleshy derivation from the superficies of the palmar 

 ossicle- and it divides into two slips ending in tendons, one on either side of the inner- 

 most or second digit. Huxley (MS.) hints separation of a palmaris longus inserted 

 into the fascia of the manus ; but other observers speak of its complete fusion with the 



flexor sublimis in Dasyjpus. 



The flexor carpi ulnaris possesses an olecranal origin and insertion into the pisiform 

 bone. The flexor carpi radialis is smaller, and with a much shorter belly, than the 

 preceding. Its lower tendon commences about opposite the upper end of the lower third 

 of the radial shaft, and, going behind the styloid process, lies in a groove in the scaphoid 

 and is ultimately inserted into the trapezio-trapezoid bone. In apposition with the radial 

 flexor, a representative of pronator radii teres is derived from the inner condyle and inter- 

 muscular fascia. Its widish tendon of insertion occupies the third lower quarter of the 

 shaft of the radius upon its internal aspect. As regards these three muscles in the 

 genera Dasi/ptis, Tatusia, and Chlamy doj)lioms there is no distinction worth mention ; and 

 neither in them nor Tolypeiites is there a pronator quadratus. 



The next muscle or set of muscles includes representatives of flexor sublimis, flexor 

 profundus digitorum, and possibly flexor longus pollicis. Without tearing asunder the 

 fleshy fibres it cannot well be separated above ; at the wrist it divides into several great 

 tendons fixed to the proximal end of the palmar ossicle ; and at the further digital 

 extremity three fresh tendons are furnished. Reducing the upper mass to apparent 



constituents, I resolved these into five. 1. The portion simulating a flexor subhmis is 

 but moderately bulky ; it comes from the internal condyle, intermuscular fascia, and 

 partially adnate fellows, and below forms superficially a strong tendon attached to the 

 inner prominence at the proximal end of the palmar bone. 2. The largest portion of the 

 muscular combination arises from the mner surface of the olecranon and whole of the inside 

 of the ulnar shaft, a short slip moreover sprmging separately from the internal condyle. 

 This double-headed portion, which possesses a tendinous exterior, terminates broadly on 

 the palmar bone, there occupying superficially its proximal end, except the prominence 

 restricted to the previous division. 3 and 4. Beneath are two small cord-like slips 



' Mem. cited, p. 38. 



• See an account of this muscle by Mivart and myseK in Hyrax calends, P. Z. S. 1865, p. 341, fig- 6 ; '^^ 

 remark* conccnung the palmam brevis in Dasyprocta cristata, P. Z. S.l 8fifi. n. 402. fi^. 2. 



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