46 THE SENSE OF TOUCH IN ANIMALS 



(a) Digits. 



P.R. terminal phalanges, longitudinal, wide ellipses. 



„ middle phalanges, transverse except D. 5, which is oblique. 



„ proximal phalanges : D. 1, transverse ; D. 2, loops open to 

 radial side ; D. 3, arches open in proximal direction ; D. 4, 

 loops open to uhiar side ; D. 5, loops open to ulnar side and 

 sloping. 



(b) Palmar surface. 



Three interdigital eminences, one thenar, one hypothenar. 

 P.R. radial eminence, ovate whorl Ijdng transversely. 

 „ central eminence, whorl. 



„ ulnar eminence, very wide loops open to ulnar side. 

 „ thenar eminence, ovate whorl — transverse on proximal por- 

 tion. 

 „ hjrpothenar eminence, irregular loops open to ulnar side on 

 proximal portion ; on rest of eminence transverse. 

 Foot. (Fig. 33.) Well proportioned ; D. 2, 3, 4, 5 webbed nearly to first 

 phalangeal joint ; nails short ; plantar portion narrow towards 

 heel. 



(a) Digits. 



P.R. terminal phalanges, longitudinal, wide ellipses. 



„ middle phalanges : D. 2, 3, 4, transverse ; D. 5, very oblique. 



„ proximal phalanges : D. 1, transverse ; D. 2, longitudinal 

 loops at tibial side open in that direction ; D. 3, arches 

 open in proximal direction ; D. 4, arches open in proximal 

 direction ; D. 5, loops open to fibular side. 



(b) Plantar surface. 



Three interdigital eminences ; large one at base of D. 2- divided 

 into two portions by a crease ; large eminence at base of 

 D. 1 extending to near the heel ; large eminence on fibular 

 border extending to heel. 

 P.R. eminence on tibial side, wide loops open to fibular side rest 

 of eminence oblique. 



„ central eminence, whorl open slightly in proximal direction. 



„ eminence on fibular side, wide loops open to that side ; at 

 base of D. 1, wide ellipses placed transversely to the digit, 

 rest of eminence irregular loops ; on fibular border, obhque 

 at centre of eminence ; arches on proximal portion open in 

 proximal direction. 



„ crumpled-up eminence in centre of plantar surface with P.R. 

 transverse. 



Pig-tailed Monkey {Macacus nemistrinus). 

 Hand. (Fig. 34.) Digits medium length, nails short, palmar portion 

 broad. 



