DESCRIPTION OF SPECIES EXAMINED 



119 



lary ridges. The apex of the whorl is in the centre and on either 

 side of it are well-marked papillary ridges with an imbrication 

 directed towards the apex. Driisenleisten small, papillse of the 

 corium pointed. 



Fig. 136. — Longitudinal section from the plantar surface of 

 the hind foot, with marked papillary ridges imbricated in a 

 distal direction, coiled sweat-ducts passing down from each of 

 these to the Driisenleisten which are pointed and not very long, 

 papillae of the corium not well developed. 





/ 



Fig. 140. — Black Ape. Cynopithecus 

 niger. x 15. Pes, D. 4. Middle 

 phalanx, imbrication distal, longi- 

 tudinal section. 



Fig. 141. — Black Ape. Cynopithecus 

 niijer. x 15. Pes, D. 5. Ter- 

 minal phalanx, longitudinal sec- 

 tion. 



Papio hahouini (Fig. 137). — Transverse section through an 

 interdigital pad on the palmar surface of the forefoot, showing 

 papillary ridges with imbrication directed away from the centre 

 of the pad, and Driisenleisten and papillae of the corium not well 

 marked. 



Papio mormon (Fig. 138). —Longitudinal section from the 

 ulnar border of the palmar surface of the forefoot, showing 

 low papillary ridges, and these with a distal imbrication ; blunt, 

 short Driisenleisten, and bifurcated papillae of the corium. 



Fig. 139. — Longitudinal section from plantar surface on 

 the fibular side in front of the heel. Papillary ridges, low and 



