228 Dr Doncaster, On some Gynandromorphic Specimens 
the uncus, anus and ovipositor are each divided; the right valva 
is not unlike that of a normal male; the left is abnormal and has 
attached to it a second anus and half of the ovipositor. The 
uncus Is divided, and its left half bears on its outer side the second © 
half of the ovipositor. The aedeagus is normal; on the left side of 
the eighth segment there is a portion of the ostium bursae. 
The chief peculiarities of the specimen are thus (1) that though ~ 
predominantly male, it has the lacticolor character which from its 
parentage should be confined to females; (2) throughout the body 
the right side is male, the left imperfectly developed or tending 
towards the female type, with division of parts of the genital 
armature which are normally median. The internal genital organs 
were as far as is known imperfectly developed male organs. 
The second specimen (family 14.31), hatched on April 9, 
attracted my attention at once, since I could not decide at 
all when I examined it alive whether it was male or female. 
I attempted to pair it with both sexes, but it neither showed 
sexual instincts nor attracted males. In pattern it is intermediate 
between grossulariata and lacticolor (much like the Rev. J. M. 
Woodlock’s variety ‘Q,’ cf. Journ. of Genet. v, No. 3, 1916); the 
black spots are much reduced, but it must be regarded as being 
grossulariata from their shape, and also because they are well 
developed on the lower surface of the wing. As the parents were 
grossulariata female and lacticolor male the grossulariata character 
should appear only in the male offspring. The remainder of the 
family consisted of 11 grossulariata males, 11 lacticolor females. 
On dissection of the abdomen, the internal genitalia were poorly 
developed female organs; there was an ovary on each side, with 
four egg-tubes on the left and two or three on the right; some 
of the follicles (egg-tubes) contained a few eggs, about four of 
which were fairly well developed. There was a bursa copu- 
latrix and I found no trace of testes. The main points from 
Mr Pierce’s report are (1) the antennae are male in character, 
as are the frenula and retinacula of the wings. The external 
genitalia are asymmetrical, very imperfect, but largely male, with 
only small traces of ovipositor, but with the external armature of ~ 
the bursa on the eighth segment and no trace of aedeagus. The 
valvae are largely aborted, especially that on the right side. 
The uncus is divided, and the right half bears spines character- 
istic of the ovipositor. The eighth segment is largely female in 
character, and bears a fairly well developed ostium bursae. 
The important features of this specimen are therefore (1) the 
predominantly male character of its external organs, both genital 
armature, which, however, is very imperfectly developed, and 
secondary sexual characters, combined with the pattern which 
should accompany the male sex from such parentage, though this 
