26 CHARLES MIDLO AND HAROLD CUMMINS 



types (L, W, S) the perfect, degenerate and vestigial 

 examples are all combined. 



Duplex symbols Combinations of symbols, as in- 

 dividually defined above, indicate the occurrence in a 

 single morphological area of two configurations of the 

 types formulated. 



Symbols for regional designations. The symbols used in 

 designating individual configuration areas are for the most 

 part explained by the labels of figures 3 and 4. 



The following additional symbols require definition. The 

 abbreviation H is used for the hypothenar region as a whole, 

 applying when it is desired to combine H d and H p and when 

 the two elements are not distinguishable. Central area is 

 abbreviated to CA. The plus sign has been used to show 

 that two adjoining morphological areas are blended in a 

 single configuration (e.g., H d + H p ; Th -f I). 



