468 Mr. G. A. K. Marshall on 



likeness to Athyma and Limcnitis must have struck every 

 naturalist who has looked through the drawers of a toler- 

 ably large collection. Col. Swinlioe lias recently called my 

 attention to a I!iq)lcea-Y\ke Ncptis from China, N. imitans. 



The resemblance of the genus Nc2')tiilo'psis to Neptis 

 seems, on the other hand, to have been due to mimetic 

 approach on the part of the ioruier towards the type set by 

 the latter. 



The Hypsid moth NyctcnLCiu Icticonoii seems to have in- 

 dependently adopted the same aposeniatic .scheme of 

 colouring as the genus Amauris, the only change in the 

 direction of tlie latter dominant type being a slight broad- 

 ening of the white bar crossing the fore-wings, a broaden- 

 ing Avhich is at once recognizable when this and other 

 African species of the moth are compared with their nearest 

 Oriental allies. The conspicuous and almost certainly 

 specially-protected Hypsidx strongly tend to enter into 

 synaposematic association with other specially-defended 

 forms in various parts of the world. Thus one species 

 approximates towards Hamadryas, while, in tropical 

 America, the smaller forms become transparent and 

 resemble the smaller Ithomiinm, while the larger (Fericojns) 

 possess the warning coloration of species of Mclinxa and 

 Heliconius. 



B. Limnas chrysiiypits-like Groups. 



The first of these groups was captured on March 0, 1897, 

 at Malvern, Natal. It consists of the eight following 

 individuals : — 



Limnas chrysippus $ . 



„ „ $, var. alci2)poides. 



Hypoliinnas misijipus ^ , with pale hind-wings like 

 the last-named insect. 



JI. misippiis $, var. inaria. 



Planema eschria $ , ckrysi2Jpus-\\\iQ. type-form with 

 white sub-apical bar to fore-wings and reddish- 

 broAvn black-bordered hind-wings, the ground- 

 colour extending on to the fore-wings. 



Acnva cncedon $. 



A. Serena, var. hnxtoni, ^ . 



A. doubledayi ^. 



The latter individual, being a male, is not really a 

 member of the group, inasmuch as it lacks the oblique 



