K. A. CoCKAYNK 95 



and all f'eiiiales hri/oniiw. This appears to be a simple case of repulsion 

 between the factors B and /! Bryuniae female would have the constitu- 

 tion BbFf, napi male bhff and hryoniae female would be a heterozygous 

 dominant fur huth sex and hryoniae factors. 



Melanargia galathea. 



A remarkable and unique gynandroniorph was exhibited at the 

 South London Nat. Hist. Soc. in 1913. It was captured by the 

 Rev. George Wheeler at Pont de Pieve, July 17, 1009, in the evening, 

 and flew very clumsily. It shows mixed characters of type male and 

 ab, lugens female (PI. XXI, figs. 3 and 4). 



The ab. lugens is very rare and the few I know of aic all females- 

 Figures are given in the Entomologist, 1873, vi, p. 57, and the Bull, de 

 la Soc. Lepidopt. de Geneve, I, p. vi. If the aberration is ever met 

 with in the male this specimen belongs to the previous gi'oup of 

 heterochroic gynandromorphs. Gynandromorphs of this species are 

 extremely rare. 



The left antenna is black, but is malformed, being twisted and 

 shorter than the right. The right antenna has grey scales on it. 



The left forewing is black (ab. lugeiis) except for a streak of male 

 colour running from base to margin, the left hindwing is wholly black. 

 On the underside of the left forewing there is more normal colour of 

 male type near the base, and some also on the underside of the left 

 hindwing; otherwise the distribution of type colour of male and ab. 

 lugens of female is much the same as on the upper side. 



It appears to have two valves and an ovipositor. 



For permission to describe and figure it, I am indel)ted to the 

 captor. 



Hereditary and Familial Nature of Gynandromorphism. 



There is no doubt that gynandromorphism is in some cases familial. 



I have ah'eady referred to the four heterochroic gynandromorphs 

 bred by C. W. Simmons from a jjairing of Henierophila ahri(ptaria type 

 with the melanic ah. nigra, and to the three heterochroic gynandromorphs, 

 and one gynandroniorph of purely type form of Aglia tau bred by 

 Standfuss from ova obtained by crossing a type specimen with a melanic 

 ab. lugens. This was a most interesting family showing one individual 

 with segregation of sex charactiM-s only and three with segregation of 

 sex characters and smuatic characters. Harrison and Main bred seven 



