(ae) 
earlier bisexual brood, in the December series with a later 
one. 
Encedon|| Lycia 
1910 ———__ ]—__— History 
aes 19 
Company 1 46 “32° ; From bateh of eggs on single leaf 
<a aie hea 24 | “93° a i b 
a 3 35 | = 5 is 
ae ee 6/2 || 4] 1 a“ ie 
A 5 6 | 16 A F ¥ : 
Age: | Sl auld = - 
cece if 2/1 7/6 lis - a 
Family 1 48 From ¢ and @ lycia captured in cop. r 
spo is ane ‘19 | 13° : From 3} and 2 lycia of Company Le ar 
hay 3 bt | 6 | 13 | Froma captured 9 Bireda oe . 
Wild Larvae wad 8 | 5 | 26 | Emerged June 26-July 13, 1910. Only females 
appeared after July 7: 3 encedon and 24 lycia 
(sek tescia 17 | 3 | 18 | Emerged December 10-24, 1910. The 3 males 
appeared with 2 9 lycia, December 23—4 
It is to be noted that the three all-female companies were 
bred from eggs laid normally in the wild state, and the con- 
clusion is inevitable that a large proportion of such companies 
is the normal occurrence. On the other hand, the figures 
suggest that all-male companies are not normally produced. 
Males, however, were more numerous than females in all the 
bisexual batches except Company 6 and Family 3; and the 
males often emerged earlier than the females. The common 
occurrence of the unisexual companies obviously promotes 
interbreeding, and the advantages of interbreeding, acting as 
selective criteria, may have increased the tendency to produce 
nothing but females as scon as it appeared. 
These results have been submitted to Mr. L. Doneaster, 
who agrees with Prof. Poulton in thinking it probable that the 
lycia form, although far commoner in the district, is recessive. 
Mr. Doneaster wrote, September 26: ‘‘ On the data available I 
am inclined to think encedon is dominant. ‘The Family 2 from 
parents ex Company 4 is hardly explicable on any other view, 
and, as you say, the existence of several pure /yciw broods 
