1866.] Mv.i .Woodi on Variations in Human Myology, 235 



occurred, into two parts, of which the innermost was implanted upon the 

 tendon of the perforatus, near its division within the sheath of the index 

 finger; while the outermost joined the normal lumbricalis near its usual 

 place of insertion. Higher up in the arm another muscular slip connected 

 the redundant tendon from the sublimis with the indicial tendon of the 

 profundus. In subject 9 was a muscular connexion of the flexor sublimis 

 with the origin of the flexor longus pollicis, like that described in the last 

 paper. 



1 1. The variations of the flexor profundus digitorum in three subjects 

 consisted merely in a not uncommon distinct and superficial muscular 

 origin from the coronoid process along with the fibres of the sublimis, such 

 as is frequently met with in the lower animals. In subject 8 was found a 

 tendon connecting the indicial part of the flexor profundus with the tendon 

 of the flexor longus pollicis. In subject 20 this arrangement was reversed, 

 the tendon going from the flexor pollicis above to the flexor profundus 

 below. This variety is found in the next column. 



12. In addition to the variety just mentioned the flexor pollicis longus 

 gives, in subject 2, a tendon to the first lumbricalis on both sides. 



13. The lumbricales have been found irregular in three other subjects 

 besides those just mentioned, in which the first was seen to arise from the 

 flexor sublimis and flexor longus pollicis. In subject 5 the third lumbricalis 

 on the right arm was bifurcated, one half going to the ulnar side of the 

 middle finger and the other to the radial side of the ring finger. Both 

 sides of the long finger were thus provided with this muscle, an arrangement 

 which was repeated in both the hands of the 22nd subject. On the right arm 

 of the 32nd subject the whole of the third lumbricalis (see fig. 3 c) was in- 

 serted into the inner side of the long finger, while the fourth was entirely 

 absent. This was also the case with the left arm of subject 5. 



14. The name at the head of this column — flexor carpi radialis brevis 

 — I have applied to a muscle which is given in fig. 3 «, drawn from sub- 

 ject 32. This subject was, from the number and character of its varieties, - 

 the most remarkable of the whole. In this case the muscle arises from 

 the middle third of the front surface of the radius, between the flexor longus 

 pollicis above (c?) and the pronator quadratus (c) below. Passing under 

 the annular ligament as a distinct rounded tendon, close to the carpal 

 bones, inside of and parallel with the sheath of the tendon of the 

 flexor carpi radialis (/), it is inserted partly into the os magnum, but 

 chiefly into the base of the middle metacarpal bone, where it gave attach- 

 ment to some fibres of the flexor brevis pollicis muscle. It is evidently a 

 flexor of the third metacarpal bone, corresponding to the flexor carpi radi- 

 alis of the second metacarpal. During the last session a precisely similar . 

 muscle was described by Dr. Norton, of St. Mary's Hospital, and exhibited 

 by him at a meeting of the Zoological Society. The subject of figure 3 is 

 further remarkable for a distinct slip of tendon from the flexor carpi ulnaris 

 ([/) to the base of the fourth metacarpal bone (seen at b). In this arm we 



