OBANG OUTANG. 



S3 



This complicated structure may be readily un- 

 derstood from an inspection of the accompanying 

 drawings, in which each set of tendons is distin- 

 guished by different colours. 



The flexor brevis pollicis is strong, and, as in 

 the human hand, has a double insertion, forming a 

 sheath for the reception of the tendon of the 

 flexor longus. It is intimately united to the ad- 

 ductor pollicis. The adductor pollicis is a large 

 muscle extending nearly along the whole length of 

 the metacarpus of the fore-finger. 



There is no trans versalis pedis in this animal. 

 Indeed, it was hardly to be expected in an organ so 

 analogous to a hand. 



The lumbricales, the abductor indicis, the ab- 

 ductor minimi digiti, its flexor parvus, and the in- 

 terossei, are of a more lengthened form than in 

 man ; but we found neither an indicator muscle 

 nor a palmaris brevis in either extremity of this 

 animal. The aponeurotic expansions in its palms, 

 and the annular ligaments of the wrist and ankle, 

 are sufficiently marked. 



The Brain and Principal Nerves. 



On removing the upper part of the cranium in the 

 usual manner, the brain was observed to fill the cavi- 

 ty completely. The skull is perhaps thinner than in 

 man. The dura mater has the same texture. The 



VOL. III. C 



