386 MR. A. G. BUTLER ON NEW LEPIDOPTERA. [Apr. 2, 



large oblique oval white spot black ; secondaries with the apex and 

 a more or less confluent marginal series of dots at the terminations 

 of the nervures black ; body yellow, banded with black. Expanse 

 1 inch 9 lines. Dar-es-Salem, Zanzibar (/. #• F. Moir). 



A delicate little species, resembling the New-world genus 

 Stenele. 



14. Aletis variabilis, n. sp. 



2 ■ Ochreous ; primaries with the apical two fifths blackish, 

 enclosing a large transparent white patch beyond the cell, and two 

 smaller pvriform spots on the median interspaces ; secondaries with 

 a regular blackish border enclosing nine transparent white spots, 

 most of which touch the outer margin ; body greyish, spotted with 

 white. Expanse 2 inches 3 lines. Ambriz (Monteiro). 



2 . Yar. a. Primaries with the pyriform spots elongated into 

 ellipses which distort the blackish border, also a third bifid spot 

 below them completely interrupting the border near the external 

 angle ; secondaries with the white marginal spots confluent and 

 breaking through the border at apex. Ambriz {Monteiro). 



S • Var. b. Primaries with all the white spots confluent, forming 

 a large irregular hyaline patch which almost covers the disk ; 

 secondaries with the inner edge of the marginal border only trace- 

 able near the anal angle, the white spots expanded into a broad 

 hyaline belt, which widens gradually to the costa. 



Angola, Bembe Mines (Monteiro). 



A. variabilis is much like Stenele lutescens. 



The other species of Aletis in the Museum were all placed by 

 Mr. Walker under A. helcita, to which they are allied. They are as 

 follows : — 



1. A. libyssa, Hopffer, from Natal and the Zulu country. 



2. A. fascelis, Linnaeus, from the Congo. 



3. A. helcita, Clerck, from Western Africa (exact locality un- 

 known). 



4. A. druryi = A. helcita, Drury, 111. hi. pi. 29. f. 4. Sierra 

 Leone. 



5. A. macularia, Fabricius, from Ashanti. 



Of these forms A. libyssa is the most decidedly distinct, the others 

 are mere local modifications of one type differing from one another 

 in the size and number of the white spots of primaries and the width 

 of the black border of secondaries. Cramer's .4. helcita is the same 

 as that figured by Drury. 



Deilemera, Hiibner. 



15. Deilemera signata, n. sp. 



Allied to D. artemis, Boisd., and D. pellex, Linn. (Nyctemera 

 separata, Wlk.), but smaller than either, with the broad white 

 postmedian patch of primaries reduced to a quarter the size, and 

 with the dark border of secondaries of double the width. Expanse 

 1 inch 7 lines. Darnlev Island (Dr. W. Y. Turner). 



