DESCRIPTIONS OF THE PAPILLARY RIDGES 53 



P.R. hypothenar eminences, arches on distal portion and on 

 proximal portion. 

 Foot. (Fig. 4L) Well proportioned ; D. 1 long, nails short, 

 (a) Digits. 



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

 „ middle phalanges, transverse. 



„ proximal phalanges : D. 1, transverse ; D. 2, arches open in 

 proximal direction ; D. 3, arches open in proximal direc- 

 tion ; D. 4, loops open to fibular side ; D. 5, oblique. 

 (6) Plantar surface. 



Three interdigital eminences, not very well defined ; fleshy 



eminence at base of D. 1 ; eminence on fibular border 



extending to heel. 



P.R. fibular interdigital eminence, wide loops open in proximal 



direction, lying obliquely. 



„ central interdigital eminence, wide loops open in proximal 



direction, longitudinal. 

 „ tibial interdigital eminence, wide loops open in proximal direc- 

 tion, lying obliquely. 

 „ eminence at base of D. 1, well-formed whorl, proximal portion 



oblique. 

 „ eminence on fibular border, arches at distal portion open in 

 proximal direction ; rest of eminence oblique. 



Hainan Gibbon {Hylobafes liainanus). 

 Hand. (Fig. 42.) Digits relatively very long, nails short, palmar portion 

 narrow and contracted, 

 (a) Digits. 



P.R. terminal phalanges, longitudinal, wide ellipses on D. 1, 2, 3, 

 4 ; D. 5 loops open to ulnar side. 

 „ middle phalanges : D. 2, 3, 4, 5, arches open in proximal 



direction. 

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

 D. 3, double arches ; D. 4, arches ; D. 5, arches, open in 

 proximal direction. 

 (6) Palmar surface. 



Three interdigital eminences, faintly marked ; small thenar 

 and no hypothenar eminence. 

 P.R. on all interdigital eminences, longitudinal and oblique, except 

 at base of D. 3, where there are arches open in proximal 

 direction ; and at base of D. 3 a few irregular ellipses. 

 „ thenar eminence, oblique and longitudinal. 

 „ hypothenar eminence absent. 

 „ remaining portions of surface longitudinal. 



