524 MR. J. C. GALTON ON DASYPUS SEXCINCTUS. 



My observations have been confined to the muscles connected with the fore and hind 

 limbs only, since these are of the most importance for the determination of general and 



ial homolo & 



Recourse has frequently been had to the beautiful plates, illustrating the myology of 

 the Armadillo, contained in Cuvier's splendid work upon Comparative Anatomy 1 ; but 

 f had better here, since I concur in the conclusion, borrow the language of a countryman 

 ->f the great anatomist, in order to clear myself completely from suspicion of being 

 biased by insular prejudices: "Mais les dessins qu'il en donne sont assez imparfaits* 

 < l t n'ont pu nous etre que d'un faible secours " 2 . 



Happ, in his excellent monograph on the Edentata 3 , has described the muscles of the 

 limbs in Myrmecophaga tamandua only ; but I shall nevertheless have, from time to 

 time, occasion to refer to his descriptions, for the purpose of comparison. 



Upper Extremity. -Great extent of motion seems denied to this member; for, upon 

 reflecting the skin merely, the forearm will be found flexed upon the arm, and this latter 

 uam closely applied to the side and bound down by fascia, leaving perfectly free and 

 unembarrassed movement to the carpal joint only. The forearm, moreover; does not 

 appear to be capable of being extended from the upper arm to a greater degree than a 

 n ht angle Ihis limitation of motion seems to be in a great measure due to the high 

 a t achment along the humerus of the extensor carpi radialis. With regard to the 

 otation of the forearm, the extent of supination is small ; and this is probably owing to 

 IIS ° CCaS10ned by thG attacl " of the pronator teres-the utmost Hmit 

 Z2« r ? 1 P ?!! 0n ^^ halfway between «* °f exte ™ lunation and 

 T^2^ P ^ hand ***** lnWardS t0Wai ' ds the ^ T1 - impingement of 

 rtSn^Lw rr^ 1 C °^ leof the humerus however, appears^to be the 

 . i catest o bstaclc to complete supination. 'il- 



ia lie Zekw'r 1 *' t0 °' ° f " Pr ° nat0r qmdrahtst in this <™l must be associated, 



a S 5.TJS ZSZSZ e 1t * the limitation of rotatio11 of the f — 



trikiu- by the fall rW»l ° T, styinator brevis, which is rendered the more 



£ SKS^SS : r mn ff muscies ' and ^ ° f its —*■'* 



termined plan-, * others at the S£XlS* ™ ". the «*«*» ° f a ^ 



1 



iluul P iUU » »y otners as the nrnmi«A ft f c t • a r l 



sole heirloom remaining to po^Xu of T 77^ T" * ^ ^ 



B o postenty out of the substance of a neglected property 



uvier. Laurillard fit A[,.rn,v„ . a , . ~ 



as 



Anatomische 



| Anatomic Comparoe, recueil de planches.' Pol. Paris, 1855. 



JFourmilier 



I e livraison. Paris, 1867. 



.tensive insertion. (System de 



von Wilhclm von Rapp. Tubingen, 1852. 

 3Cording to Meckel, the pronator teres is very broad, and has 

 Anatomie. Halle, 1828. 



' - As the stndy of comparative osteoW l, 7*. ^ 182S ' Dritter ™' P- 530 '> 



-nebrate skeletons are modifications so tt 7 i ^ concl ^on that there is a typical skeleton, of which all 



' i which the individual vertebrate mnscnl, ! my ° l0gy teaCheS m that there » « typical 



*n fonnation of a correct system oT^lX^ r™^™" ^ ^ Macalister, " Cc 



' ^ Agassi, on « Prophetic Typef' TiT "f* 3 '' ^ * M *~ - ^ ™ ' '" 

 See Darwin. . ft^J ^ o ™ ' . (Essa y °» Classification. 



ee Darwin, < Orian 

 'ts under 



Londo 



y i8bl, p. 151 e * wg-., als p . 487; < Variation of Animals and 

 P- 317. Paget, * Lectures on Surgical Pathology/ edited by Dr. 



