1884.] 27 



ON AN EXTEAORDINARY HELICIFORM LEPIDOPTEROUS LARVA- 

 CASE FROM EAST AFRICA: SUPPLEMENTARY. 



BY ROBERT McLACHLAN, F.R.S., &c. 



1 find that the singular shell-like cases from East Africa noticed 

 and figured by nie in the last No. {ante pp. 1 — 2) of this Magazine 

 were not quite so unknown as I then suspected. Precisely similar 

 cases from the Zanzibar coast were described and figured by Gers- 

 tacker so long ago as 1873, under the name '^Cochlophora (?) valvata,'' 

 in the entomological portion of Van der Decken's Eeise, Band iii, 

 Abth. ii, pp. 379—381, pi. xvi, figs. 2 & 2a. 



Gerstacker's account and my own agree remarkably, even to the 

 variation in the direction of the spiral. He went further than I have 

 done, and burnt a portion of a case, with a view of determining the 

 character of the ash. 



In the "Zoological Eecord," vol. x, 1873 (1875), p. 392, the 

 Lepidopterous portion of which was supplied by Mr. W. F. Kirby, 

 we find, at p. 392, under ''Psychidw,'" the following:—" Cochlophora 

 "(?) valvata. Gerstacker figures snail-shells which have been inhabited 

 " by this species, and describes the remains they contain. V. de Deck- 

 "en's Eeisen, iii, pt. 2, pp. 379—381." Now, Gerstacker does not 

 describe the cases as " snail-shells," but perfectly comprehended 

 their real nature. He nowhere describes "the remains they contain," 

 but, on the contrary, is careful to state that in none of the cases could 

 he find the remains of either larvae or pupae. It is to be hoped that 

 our " Zoological Eecord," in the success and accuracy of which all 

 British Zoologists should take the warmest interest, may not often 

 prove so misleading. 



Levvishaui, London : 



J^ule \mh. 1884. 



ON THE LARVA, &c., OF BER^ODES MIISUTA, LINNE. 

 BY KENNETH J. MORTON. 



Down to the time of the publication of the " Monographic Eevision 

 and Synopsis of the Trichoptera of the European Fauna," writers on 

 the Order had placed the small black insects belonging to the genera 

 BercBa and Berccodcs in the BhyacopUlidw. But at page 490 of the 



C 2 



