62 THE SENSE OF TOUCH IN ANIMALS 



P.R. on interdigital eminence, oblique to ulnar side ; loops open in 

 distal direction on radial side of eminence. 

 „ at base of D. 2, oblique and forming an angle with P.R. of 



cleft of D. 1. 

 „ opposite D. 3 and 4, longitudinal. 

 „ thenar eminence, wide ellipses placed obliquely. 

 „ hypothenar eminence, longitudinal loops open in distal direc- 

 tion. 

 Rest of palmar surface longitudinal and oblique. 

 Foot. (Fig. 49.) Ill proportioned ; very large D. 1 with thick, fleshy pulp ; 

 pulps on D. 2, 3, 4, 5 wide ; nails short ; plantar portion 

 very much developed in region of D. 1. 

 (a) Digits. 



P.R. terminal phalanges : D. 1, 2, 3, 4, longitudinal, wide ellipses ; 

 D. 5, loops open to fibular side. 

 „ middle phalanges : D. 2, 3, and 5, low arches, open in proxi- 

 mal chrection ; D. 4, steep arches, open in proximal direction. 

 ,, proximal phalanges : D. 1, transverse ; D. 2, low arches ; 

 D. 3, steep arches ; D. 4, very steep arches ; D. 5, oblique ; 

 open in proximal direction. 

 (6) Plantar surface. 



Indefinite eminences at base of D. 1 and D. 5 ; no other emi- 

 nences. 

 P.R. longitudinal over the greater part of surface. 

 „ eminence at base of D. 1, very wide ellipses ; eminence at base 



of D. 5, loops open in distal direction. 

 „ midway between base of D. 1 and heel a group of P.R., vidth 

 low wide arches, open to tibial side. 



Man. 

 Hand. (Fig. 50.) 

 (a) Digits. 

 P.R. terminal phalanges show the tips occupied by lines of ridges 

 concentric with the free edge of the nails on D. 2, 3, 4, 5. 

 On D. 1 the lines are placed obliquely, so that when the 

 pulp is applied to a smooth surface with the hand in prona- 

 tion the ridges here occupy closely the same relation to this 

 surface as the concentric ridges on the tips of the other 

 four digits. 

 „ terminal phalanges show on the pulps, arches, loops, and 

 whorls as follows : D. 1, whorl ; D. 2, loops open to ulnar 

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

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

 „ middle phalanges, oblique. 

 „ proximal phalanges, transverse and oblique. 



