494 Mr. G. A. K. Marshall on 



which were discussed in relation to their models chrysippus 

 and Idugii, the groups containing Lyc^nidie or Ifesperidie 

 are considered below. 



A group of the smaller Acra^as with a single mimetic 

 Lycsenid was captured at Salisbury on Sept. 28, 1900. 

 It contains the following species : — 



2 Acviva violarum, var. asema $. 

 1 „ doubledayi, var. axina $. 

 1 „ induna ^. 



1 Gatoclinjsops mashicna ^ (figure of ^ on Plate XIV, 

 fig. 5). 



A. induna falls into the first-mentioned group of small 

 Acrfcas, resembling raldarena in the possession of a black 

 apical patch to the fore-wing. The strong development of 

 black spots upon an ochreous ground on the under-side of 

 the LjTienid is doubtless mimetic in the position of rest, 

 especially when in the company of Acrasas or in places 

 where they are likely to be found. Mr. Marshall informed 

 Mr. Trimen "that on October 20, 1894, he saw two of this 

 LycTiia sleeping on the end of a stem of dry grass among 

 a number of Acrxa noluvra and A. caJdarcaa, and was 

 struck with the general similarity of their under-side to 

 that of the Acrajas ; he also noticed that in the attitude 

 of repose the fore-wings of the Lycmna were well depressed 

 between the hind-wintfs, tiivincj the insect the elongate 

 outline of an Acr^ra" (Trans. Ent. Soc. Lond., 1898, p. 6). 

 Mr. Trimen also suggests that the heavy black spotting of 

 L. (0) iji(jantca and L. (C) prriHtJchra (Trim.) [= pccidiaris, 

 Rog.] is of the same significance, although the ground- 

 colour is not Acrxa-Y^ke in these species. 



A paragraph from one of Mr. Marshall's letters is quoted 

 below. 



" Umkoiiums Month, Ncdal ; Sept. 3, 1897.— The under- 

 side of the Acrn'ii-WkQ Lycamid L. jna.^hi(na is ochreous 

 yellow with large black spots, but I did not realize its 

 resemblance to an Acr^ea until I saw them roosting to- 

 gether. The mimicry, however, is in a very incipient stage, 

 for the yellow under-side fades somewhat rapitUy, thus 

 jnuch lessening the resemblance ; and, as it does not occur 

 in its near allies L. liypolcnca and the fine L. gigantca, it 

 is clearly a recently-ac(^uired character." 



In another group captured at Umtali, 3700 feet, in 

 December 1900, the Aeneas are only represented by a single 



