DERMATOGLYPHICS IN PRIMATES 



115 



lateral series are straight, slanting distalward from the mid- 

 line at an angle of about 45. At the tip of the tail (see 

 Schlaginhaufen, fig. 119D) the configuration in some cases 

 is disposed in a whorl-like system. These observations agree 

 with the descriptions of Purkinje (his fig. 20), Klaatsch, 

 Whipple and Schlaginhaufen. 



The tail in Ateles exhibits a like configuration, conforming 

 to the illustration in Purkinje (fig. 20). 



Lagothrix (two specimens, figs. 594-595) differs from 

 Alouatta and Ateles in two respects. The herringbone con- 

 figuration is not constant, and in the margins of the ridged 

 area true patterns are irregularly disposed. 



m 



. 



\\\< 



594 595 



Fig. 594 Lagothrix lagotricha, dermatoglyphics on ventral surface of tail. 

 Fig. 595 Lagothrix infumata, same. 



