YAP AND PINEDA: EctrosyNDACTYLY. | [PuHILIp. JouRN. Scr, 20, No. 1. 
Proximal phalanx of 
III metacarpal bone 
UI metacarpal ~ 
I metacarpal — 
HT metacarpal — 
Greater and lesser 
multangulars 
Fig. 2%, Fig. 2. 
PLATE 1. CASE J, RIGHT HAND. 
