132 



By rare fully dissecting out the Lumbricales, they may 

 be found, each pair with an origin oil the under side at 

 the point of bifurcation of the tendons, to the appropriate 

 digits. Their size is uniform. 



\ 

 Mm. Interossei. 



The results of my dissection of these muscles differ 

 from those obtained by Mivart. Two small muscles arise 

 from the thick tendon of the Flexor Carpi Radial is, and 

 pass to each side of the distal phalanx of the pollex. They 

 are inserted by small tendons ; one on the radial and the 

 other on the opposite side of the phalanx. Two muscles 

 very much resembling these, but larger, arise from the 

 base of the metacarpal bone of the index, and are inserted 

 in a similar manner to the former, into the distal phalanx of 

 the index. These insertions are also by small tendons on 

 the radial, and opposite surface of the index. Another 

 pair, differing from the preceding, by being more widely 

 separated, and not at all connected at the base, as in the 

 case of those of the index and pollex, arise from below the 

 os magnum, and have an insertion into the distal phalanx 

 of the 'third digit. A small interosscous muscle arises 

 on the radial side of a strong tendon, passing obliquely 

 across the palmer region of the manus. Jt is inserted 

 into the radial surface of the distal phalanx, of the fourth 

 digit. The oblique tendon, near which, this interosseous 

 muscle lies, is a continuation of the Flexor Carpi Ulnaris. 



Mivart mentions another interosseous muscle of the 

 fourth digit which I have been unable to make out. As 

 it lies directly under the pair of Lumbrieales, which he 

 missed in his dissection, or at lea.-t has not described, I 

 suggest that he mistook a Lumbricalis, for an Interosseous 

 muscle. Situated superficially to the great tendon of tho 



