264 



ON NEW SOUTH-AMERICAN RHOPALOCER A . 



extending to the base nor distally beyond the streak in 6 ; a small 

 triangular brown spot in 5 in the distal area. Hind wing with a 

 yellow-brown costal edge and apical suffusion ; a series of yellow- 

 brown subterminal spots, w r ell-defined proximally, but distally 

 suffused ; outer margin narrowly edged with yellow-brown. 

 Underside marked as in the <S , but the specimen being rubbed 

 we cannot distinguish any differences in colour. 



Head and antenna missing. Thorax and abdomen black-brown. 



Length of fore wing 41 mm. 



The completely different pattern presented by the female of 

 this insect suggests some sort of mimetic resemblance. It pre- 

 sents a great similarity to the pattern of many species of the 

 Brassolid genus Opsiphanes, four species of which, with brown 

 bands on the fore wing, are recorded from Ecuador and Peru. 

 Mr. W. J. Kaye informs us that Opsiphanes fly round the houses 

 at dusk, and this observation, coupled with the fact that the 

 female Polygraphia was found in a water-pot near a house, points 

 to the possibility of the two insects flying in company. 



