18. 



white, and "beardless and "bearded except in groups (1) and (3) 

 where no "beardless types appeared. 



JT m 12 



Fig. 4 Eipmer types : I ¥hite "bearded, II Blaok 

 "bearded. III Intermediate blaok "beard- 

 ed, I"V" Blaok beardless. 



