1867.] [Mr. J. Wood on Variations in Human Myology. 539 



last paper are included in the estimate ; 8 having been found in the 

 16 females (or one half), while only 16 were found in the 51 males 

 (not one-third). If this be established by future observation, as well 

 as the more frequent deficiency of the peroneus tertius in the same 

 sex before alluded to, its bearing upon the relative structural inferiority 

 of the sex will be curious, since both are animal peculiarities. 



Mr. Macalister states that he has found the abductor ofthejiftli meta- 

 tarsal hone existing as a distinct muscle in nine out of every twelve sub- 

 jects. In No. 5 of the Table the muscle was peculiar in arising from the 

 inner tubercle of the calcaneum by a large, distinct, and triangular fleshy 

 belly, and in being inserted by a long tendon into the necTc or anterior 

 part of the shaft, instead of the tubercle of the fifth metatarsal bone. 



34. Out of 18 sundry specimens of abnormalities in the lower extre- 

 mity, two were peculiarities of the tendon of the 'Flexor longus Tiallucis. 

 In one, a female (No. 3), the usual slip of union with the flexor longus 

 digitorum was wanting. In another female (No. 6) flexor longus lial- 

 lucis first received a long slip from the flexor communis, and then gave 

 two separate tendons to the second and third toes. That to the second 

 constituted the only perforating tendon, the one from the common 

 flexor being wanting, while that to the third toe joined at the base of 

 the digit with a smaller one from the common flexor. In two male 

 subjects (Nos. 5 & 21) the JPlantaris muscle and tendon were both ap- 

 parently blended with the outer head of the gastrocnemius. In No. 30 

 the Superior gemellus was wanting. In the right foot of No. 8, a male 

 subject remarkable for the number of its abnormalities, a considerable 

 portion of the outer fibres of the Flexor hrevis hallucis were detached 

 from the rest, and inserted into the inner tubercle on the base of the 

 first phalanx of the second toe. In the left foot of the same subject a 

 still larger slip from the fibres of the Adductor lialliccis was detached to 

 the same destination. This was also found as a less developed spe- 

 cimen in the left foot of No. 13, also a male. Two specimens of these 

 abnormalities, also in male subjects (one of each kind), were described 

 by the author in his paper of last year. They do not seem to have been 

 before recorded by any anatomist, though apparently recurring in the 

 proportion of about once in 18 or 20 subjects. 



A male subject (No. 9) was remarkable for the presence of the muscle 

 described by Otto as the Peroneus quartus (Neue seltene Beobacht. S.40), 

 arising from the lower fourth of the outer surface of the fibula below 

 the peroneus brevis, and inserted by a distinct tendon into the outer 

 side of the calcaneum, upon the tubercle between the peroneal grooves. 

 Theile mentions that this muscle sometimes replaces the peroneus hrevis 

 itself. In the case just described, both the peroneus longus and brevis 

 were coexistent. A variety of the same character, but inserted into the 

 outer border of the cuboid, is recorded by Macalister {pp. cit.) in a subject 

 having no peroneus tertius. One of the peronei muscles is, according to 



