194 



/'// YSIOLOOH 'AL 0ENETIC8 



males of Lymantria dispar are genetic males which have developed 

 up to a certain time as males but, from a certain point on, have 

 become female. Higher degree of intersexuality mean.- earlier 



Fig. 35. — Scries of intersexual males of Lymantria dispar. 



turning point. 1 In this case, the wings exhibit a characteristic 

 behavior (Fig. 35). In the very first stages of intersexuality, 

 only one wing may show a small patch of female color and scale 

 structure. (The problem of symmetry involved here will be 

 1 In a scries of recent papers Baltzer and Kosminsky have attacked the 

 concept of a turning point at different times. A paper in press by the 

 author disposes of their arguments in detail. 



