1868.] Mr. J. Wood on Variations in Human Myology. 517 



and united with the point of junction of the salens and gastrocnemius 

 (Muskellehre). Theile also met with such a supernumerary head {op. cit. 

 p. 316). 



44. Flexor longus digitorum and lumbricales pedis. — In 2 males (Nos. 

 4 & 12) and 4 females (Nos. 22, 27, 29, & 30) the tendon of the flexor 

 longus digitorum gave a considerable slip in the sole to join that of the 

 flexor longus hallucis, as well as received one from it. In 1 male it was found 

 in both feet ; and in the other, as well as in 3 out of the 4 females, in the 

 right foot only ; in the remaining female it was present in the left foot only. 



This slip has been especially noted only in the present year, and returns 

 an average of about 18 per cent. Schultze of Rostock found it in 29 sub- 

 jects out of 100, and usually on both sides (Zeitschrift fiir wissenschaft. 

 Zool. xvii. 1). Nearly the same proportion was found by Turner in 50 

 subjects (Edinb. Phil. Trans, xxiv.). The slip did not in our subjects 

 seem to be in any way compensatory for any want of size in the tendon of 

 the flexor hallucis ; for in one female (No. 22) that tendon was unusually 

 large even before the junction. In the female (No. 27) the flexor hallucis 

 received also a slip of reinforcement from the flexor accessorius. In the 

 foot of No. 29, female, the perforating tendon to the second toe was derived 

 wholly from that of the flexor hallucis, the common flexor supplying only 

 the three outer toes. In the right foot of the male (No. 11) the perfora- 

 ting common flexor of the third toe gave off a slip of reinforcement to the 

 perforated opposite to the base of the metatarsus. 



In the male (No. 1) the fourth lumbricalis was absent in both feet. In 

 the left foot of No. 9 the same muscle was double and bifurcated, and 

 inserted into the contiguous sides of the fourth and fifth toes. In No. 8 

 the third lumbricalis was double in both feet, and inserted into the con- 

 tiguous sides of the middle and fourth toes. 



According to Froment (op. cit.), varieties in the pedal lumbricales are 

 very rare. Gantzer had previously stated the same thing (op. cit. p. 17). 

 In the notes of Soemmerring, quoted by Theile, Behrends is said to have 

 observed the absence of the two middle ones. Rudolph, quoted by Gantzer 

 {op. cit.), found the third absent in the left, and the fourth in the right 

 foot of a muscular male. 



Out of 102 subjects examined, the second lumbricalis pedis was found, 

 in one, absent on both sides ; in one, the third arose from the tendon of 

 the perforatus instead of the perforans ; in another, it was double on both 

 sides ; the fourth was absent in three subjects — in one on both sides, in 

 one in the right, and in one in the left foot only ; in one the same muscle, 

 in both feet, was doubled, bifurcated, and inserted into contiguous sides 

 of the corresponding toes. This gives a proportion of only 7 per cent, of 

 abnormalities in these muscles, contrasting widely with the frequency of 

 irregularity of the same muscles in the hand. 



4.5. Flexor longus hallucis. — In both feet of a male (No. 17) the tendon 

 of this muscle gave no slip to that of the common flexor. In both feet of 



2x2 



