176 CHARLES MIDLO AND HAROLD CUMMINS 



proximal groupings of configurational fields are fairly con- 

 sistent among the genera, the distal group being greater than 

 the intermediate, and that in turn usually greater than the 

 proximal group. There is relatively little bilateral asymmetry 

 in pattern intensity; the tendency for excesses in pattern 

 intensity to favor the left side is exceptional. The regional 

 distributions of configurational fields showing dextral and 

 sinistral excesses in pattern intensity are virtually corre- 

 sponding in hand and foot. 



It has been indicated that all the genera conform closely 

 to the same dermatoglyphic description. The only noteworthy 

 failures to agree fully with the group characteristics are 

 observed in the Colobinae, with Pygathrix as the representa- 

 tive mainly figuring in the comparison because of limitations 

 of material in the other genera of this subfamily. In Pygathrix 

 is to be found the lowest pattern intensity of the Old World 

 monkeys, while the excess of hand over foot is the most 

 marked. Also, there is more pronounced bilateral asymmetry 

 than in other catarrhine monkeys. (The dermatoglyphic dis- 

 tinctions of Pygathrix are thus to be added to the considerable 

 list of anatomical characters Washburn, '41 in which 

 the genus differs from the usually accepted attributes of Old 

 World monkeys.) 



The Old World Monkeys, with the exception of Pygathrix 

 (and perhaps the other Colobinae), are but little specialized. 

 It can not be asserted that these monkeys form a main trunk 

 in the geneaology of dermatogiyphics, but this much is certain : 

 the Old World monkeys as a group embody all the acceptable 

 indicators of dermatoglyphic generalization, and they dis- 

 play even exaggeration of one sign of primitiveness, large 

 expanse and high elevation of pads. 



Lemuroidea. In contrast to Old World monkeys, the pro- 

 simian genera present wide diversity in dermatoglyphic traits 

 and in locomotor habits. 



Galago, of all the genera examined, exhibits greatest primi- 

 tiveness. The palm and sole alike present extensive areas in 

 which ridges are not formed. The pads and configurational 



