126 SEX INHERITANCE 
and in behavior, varying from almost normal 
females at one end of the series to forms that ex- 
ternally are about like the normal male. Not only 
are the wings in extreme cases colored like those of 
the normal male (with, however, occasional flecks 
of white like the female), but the size and diverse 
parts such as the antenne, the hair, the genitalia, 
and even the gonads are mosaics of male and female 
characteristics. 
These relations are more interesting when crosses 
involving different Japanese races are compared. 
When Jap. G. male is crossed to Jap. K. female, 
all F, daughters are slightly intersexual or male- 
like. When Jap. H. female is crossed to Jap. G. 
male, the daughters are somewhat more like males, 
but their instincts are female, and they attract 
males. The copulatory organs are so changed in 
the direction of the male that mating is unsuccess- 
ful; and eggs can not be laid, although character- 
istic hairy sponges are made to receive them. 
When Eur. F. female is mated to Jap. G. male; 
the daughters are more than half-way transformed 
into males. The secondary sexual characters are 
almost male. The instincts and behavior are about 
intermediate between those of the male and female 
of the two normal races. Males are scarcely, or 
not at all attracted, and no mating occurs. The 
copulatory organs show the strangest combination 
of male and female types. There are still typical 
though rudimentary ovaries. When Jap. X female 
is crossed to Eur. F. male, a still higher degree of 
