362 DR. C. F. SONNTAG ON THE ANATOMY, 



arises from the entocuneiform, the sheath of the peroneus longus 

 tendon, the capsule of the first metatarso-phalangeal joint, and the 

 lower half of the outer border of the first metatarsal. The outer 

 belly arises from the sheath of the peroneus longus and the 

 external long plantar metatarsal ligament where it is attached to 

 the outer surface of the base of the fourth toe. ISTo fibres 

 arise from the cuboid. The two bellies together with the two 

 adductores hallucis are inserted into the outer side of the base of 

 the fii'st phalanx of the hallux and the capsule of the joint with 

 the interposition of a sesamoid. The internal head is really a 

 first interosseous. 



The adductor obUquus hallucis arises from the base of the third 

 metatarsal and the proximal half of the external long plantar 

 metatarsal ligament. The adductor transversus hallucis arises 

 from the upper half of that ligament and from the internal long 

 plantar metatarsal ligament, and the capsules of the second 

 and third metatarso-phalangeal 'joints. 



T1\\Q flexor brevis minitni digiti arises from the plantar aspect of 

 the fifth metatarsal bone and the sheath of the tendon of the 

 peroneus longus. It is inserted into the capsule of the fifth 

 metatarso-phalangeal joint and outer side of the base of the 

 proximal phalanx. 



The opponens minimi digiti arises from the proximal half of 

 the plantar surface of the fifth metatarsal and the sheath of the 

 peroneus longus. It is inserted into the inner side of the 

 capsule of the metatarso-phalangeal joint. There are four 

 dorsal and three plantar interossei, but Dwight (18) mentions a 

 lai'ge number. The four dorsal interossei arise as in Man ; but 

 their insertions diflTer in that they abduct from a line drawn 

 through the middle toe. This resembles the arrangement 

 in the hand, but not in the human foot where the mid line runs 

 through the second toe. Hepburn (24) records the line as 

 resembling that in the human foot, but Ohampneys (11) and 

 Cunningham (13) point out that in all Primates except the 

 Gorilla and Lemur the interossei abduct the toes from a line 

 through the middle one. The attachments of the dorsal inter- 

 ossei are as follows : — 



No, 1 inserted into the inner side of the second digit. 



•^ 5) 5) >5 5' 11 j> 55 tniru ,, 



•^ ?7 5) 3? outer ,, ,, ,, ,, ,, 



4 „ „ „ „ „ ., „ fourth „ 



The three plantar interossei adduct towards the middle toe 

 instead of the second as in Man. The first arises in the second 

 interspace from the whole length of the outer side of the second 

 metatarsal, and a few fibres arise from the base of the third 

 metatarsal, as Hepburn (24) finds in the Gorilla. It is inserted 

 into the outer side of the second toe. The second arises from 

 the inner side of the fourth metatarsal and the ligamentous 

 structure covering' the bone. It is inserted into the inner side 



