1910.] FROM NORTHERN RHODESIA. 83 



Baoris nyassje Hew. 



A common species in the high plateau country. It appears 

 to me to be a distinct species from netopha Hew. It hangs from 

 grasses etc., with wings closed above its back when at rest, looking 

 quite like a small Acrcea. 



Baoris netopha Hew. 



I found this species, with which the foregoing has been some- 

 times confused, to be distinctly rare. I met with it only in foresb 

 in the Kalungwisi valley, ix. 



Baoris niveicorxis Plotz. 



A by no means uncommon high plateau species. It is very 

 active on the wing and good specimens are very difficult to obtain, 

 as it is extraordinarily violent when in the net. 



Platvlesches ayresi Trim. 



A common high plateau species but rare on the low ground. 



Platylesches nigricans Holl. 



A scarce species, taken only at Kdola, upper Kafue river, 

 ix., and the Chambezi valley, iv. 



Platylesches nigerrima Butler. 



Represented by a single specimen from the # upper Lufupa 

 river, xi. 



Platylesches moritili Wallengr. 

 This species is ubiquitous. 



Platylesches robustus, sp. n. (Plate III. fig. 7, J .) 



Resembles P. moritili Wallengr., on the upperside, and P. neba 

 Hew.*, on the underside, but is a much larger species than either. 

 <$ . Upperside much as in moritili, but in the primaries, of 

 the two spots in cell near its end, the upper one is small and often 

 absent ; hyaline spots as in moritili ; yellowish spot on middle of 

 vein, if present, is very faint ; a bright yellow streak along 

 proximal two-thirds of inner margin. 



Secondaries. Yellowish hairs at base, on inner margin and 

 on discal band below cell-end, more developed and of a brighter 

 yellow than in moritili. 



Underside. — Much paler than moritili ; on primaries a well 

 developed pale yellow streak between 1 and 2 ; apex and 

 anterior part of outer margin flushed with pale blue. 



Secondaries. Anterior part of outer margin broadly, inner margin 

 narrowly, flushed with pale blue ; at anal angle a large patch of 

 brownish chocolate extending up area 1 b for nearly half its 

 length ; this patch sometimes edged with whitish towards margins. 



Fringe dark brown, on secondaries much paler, becoming whitish 



* JTesperia neba Hew., Ann. N. H. (4) xix. p. 84. 



6* 



