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



be inserted into the ulnar side of the base of the metacarpal of the fifth digit, a small 

 round sesamoid being developed in the tendon at the point of insertion. 



Flexor carpi ulnaris. — Is a strong fleshy muscle which arises from the internal face of 

 the olecranon process of the ulna, immediately below the insertion of the epitroehleo- 

 <ni<>mew. Its fibres blend at first with those of the flexor profundus which take origin 

 from the innor edge of the ulna, then pass straight forward to be inserted by a broad 

 short tendon into the free extremity of the sickle-shaped pisiform bone. 



Flexor ear pi radial is.— This muscle arises from the inner condyle of the humerus, 

 I Living a common origin with the pronator teres, but being placed lowermost. On 

 leaving the forearm, through which it has passed as a slender fusiform slip, it runs 

 through a smooth groove channelled out in the palmar aspect of the scaphoid bone and 

 having an oblique direction towards the middle line of the hand, being arched over in 

 this groove by a strong ligament which spans its channel, to be finally inserted into the 

 rounded, nodular, palmar projection of a carpal bone which I may term, for convenience 

 and distinctness' sake, trapezio-trapezoid \ and becomes, also, continuous with a strong 



' The following digression on the subject of the bones of the carpus in Das^ms will not, I think, be deemed irre- 

 levant, when it is borne in mind that accuracy in description of the attachment of muscles demands and is dependent 

 upon a previous knowledge of the nature, at all events, of those osseous structures which may either serve these as a 

 Mrtmg-pomt when they enter upon their journey, or be to them a goal or <• meta" on the completion of their 



course . 



«ri„ta " 7;, SayS 1 W ' T^ ^ MCh ^ dCT Sd "W™<*«»" <* * P. 42); but no farther de- 



Zrt d V the LZ mP : P 089 ' M \ n™ ^ ^ ° tW eW - ° f *« ei » hth -* »»*■ -P«*on, sup- 



.n I L* Z' O 7 ^ 8h0WS ftat tbe ktter hSS «*» ** Tte f <™« — t remarks. 



•a piace au trapeze et du trapezoide ; " while th* fnlWn™ UM _. - ., . 



of the latter (Lond. 1842 p 97 et sea V « T. «. monograph upon Mylodon robust 



normal carpa/bones are blended 12 n 7 £ ! ^LST 1 "" ^ ^ b ^ *" ° f ^ 



and scaphoides. 



m 



ffiSKSrus r:;lZT i*-~ «-*- ? >- ^ « - — - - 



Dorsal aspect. 

 First row rhp 



USL 1 " !r' "^ **«*« ^ ; articulates en ulnar aide with oa fa« 



- Lunar ■ articulates with preceding bone on radial side 



tMflTjrtt 



if arm, in front with os 



CW»™ : a bene of great lateral extent articulates radially with l„na 



moid, posteriorly with ulna ami aI™™^ • -^ J m ' on ulnar Slde Wltn a smail sesa " 



of the fifth digit. ' ' WOm ' anteri0 ^ ™ th -I** ^ carries, moreover, the metacarpal 



4 P/,^, , : J, wedgcd iflj paImadj ^^ ^ a ^ 



Jrpus articulate posteriorly with the W/„ e fc. tf, , _____ J 



Second row (beginning radially) : 



The 



and taEr^faE^JE; ™ e lat ; era " y <« b ™' »** carries the metaearpals ef the polles 

 "lightly with the scaphoid with . Jvt ° ™ , " ^ ° nly ' *' articuIates posteriorly with the h,nar principally, 



7. t-arf/o™, , carl, LZ ,, ■ f'T m "?" 8lde ' ^^ " th ^ezio-tra^oid . 

 ^ partly with 0( :Z^1^ ,: ^' 0U,ateS ^ teri ^ **" ^/o^ldiaUy 



ifo m parti v v llf aV , ., . , / v " 1L " ^'"^/o^, radially with os m, 



J ™. Parti, , but ahgbtly, w lt h fifth digit, which is supported mainly by cuneif. 



on ulnar 



