62 G. F. HILL. 



those of the female (fig. 21) ; the latter group of bristles is continued, with a slight 

 interruption, around the sides of the segment to a point in line with the base of the 

 lower pair of spurs. The size and number of these bristles are variable in both sexes, 

 but are generally largest and fewest in the males. 



Fig. 21. Silviiis notatus, ventral surface of last segment of female pupa. 



The Adult. In life the eyes of the female are of uniform light seal-brown and the 

 facets of equal size throughout. In the male the greater part of the surface of the 

 eye is of the same colour, but at the lower third it is crossed by a sinuous, iridescent 

 blue-green and copper band, which extends to near the lateral margins and is con- 

 tinued (in light seal-brown) around the posterior margin to the vertex. The facets 

 forming this band are very small, while the remainder are large. 



