164 PROCEEDINGS OF THE ACADEMY OF [1880. 



The obturators, gemelli and qiiadratus femoris, were well de- 

 veloped. There was nothing peculiar about the muscles of the 

 thigh either on the anterior or posterior surface ; the rectus 

 arose, liowever, only from the inferior spine of the ileum. In 

 the leg anteriorly, I noticed the tibialis anticus divided into 

 two tendons ; otherwise, the muscles were as in man. The 

 peroneus longus and brevis were well developed, but there was 

 no peroneus tertius. The soleus, as usual in monkey's, had only 

 the plantar head, and there was no trace of a plantaris, although,, 

 according to Sandifort, it is present. The flexor longus digi- 

 torum supplied the perforating tendons for the second and fifth, 

 the flexor longus hallucis those for the third and fourth digits. 

 There was no slip from the longus hallucis for the big toe, 

 that muscle, therefore, except from its origin, scarcely deserves 

 that name. The flexor brevis digitorum supplied the perforated 

 tendons for the second and third toes. Those for the fourth 

 and fifth came off from the flexor longus digitorum. The 

 tendon for the fifth toe was not perforated. There was a connect- 

 ing slip between the third and fourth tendons. The external head 

 only of the flexor accessorius was pi'esent. In addition to the ab- 

 ductor, flexor brevis and adductor of the hallux, there was a well- 

 marked opponens hallucis. The lumbricales for the second and 

 fifth digits came from the flexor longus digitorum, those for the 

 third and fourth digits from the flexor longus hallucis. The ab- 

 ductor and flexor brevis minimi digiti were well developed, but 

 there was no transversus pedis. The interossei were like those 

 of the hand, Briefl}^, as compared with man, the leg and foot of the 

 Orang difl'er in the absence of the peroneus tertius, plantaris, flexor 

 longus hallucis and transversus pedis, in the fibular origin of the 

 soleus, and external origin of accessorius onl}^, in the distribution 

 of the perforating and perforated tendons for the toes, in the inter- 

 ossei, and in the presence of an opponens for the big toe. In this 

 latter respect the Orang differs not only from man, but from all the 

 other monkeys and anthropoids, the foot having a verj' hand-like 

 appearance, as compared with that of the Gorilla and Chimpanzee. 

 The foot of the Orang differs further in the absence of a special 



Prof. Humphrey held essentially the same opinion. I was not aware, until 

 I had finished my dissection, of the views previously published by these 

 anatomists, and am glad to have been able, independently, to come to the 

 same conclusion. 



