I9i6] 



De I 'RIES— DIMORPHIC M I ' TA N TS 



261 





Fig. 3. — Oeiwlhcra Lamarckiana mut. palkscois: the 2 types into which each 

 generation splits; to the left the Lamarckiana type; to the right the parental type; 

 August 1914. 



