468 Mr. G. A. K. Marshall on 



likeness to Athyiiia and Limcnitis must have struck every 

 naturalist who has looked through the drawers of a toler- 

 ably large collection. Col, Swiuhoe has recently called my 

 attention to a Euplcea-\\ke Ncptis from China, N. imitans. 



The resemblance of the genus Ncjitido'psis to Ne'ptis 

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

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

 the latter. 



The Hypsid moth Nydcmcra Icuconoe seems to have in- 

 dependently adopted the same aposematic scheme of 

 colouring as the genus Amauris, the only cliange in the 

 direction of the 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 Hyi^sidm 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 Ithomiiiiie, while the larger {Pericoins) 

 possess the warning coloration of species of Mdiiixa and 

 Hcliconi'us. 



B. Limnas chrysiiypus-like Grotips. 



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

 at Malvern, Natal. It consists of the eight following 

 individuals : — 



Limnas chrysipims $ . 



„ „ $, var. akijjpoidcs. 



Hypolimnas misvi^pas $ , witli pale hind-wings like 

 the last-named insect. 



H. misippus $, var. inaria. 



Planema eschria $ , chrysipp)us-\ike type-form with 

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

 brown black-bordered hind-wings, the ground- 

 colour extending on to the fore-wings. 



Acnva ciicedon $. 



A. Serena, var. hnxtoni, ^ . 



A. dotibhdayi ^. 



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

 member of the group, inasmuch as it lacks the oblique 



