160 Dr. A. G. Butler on new 



towards the costa than in P. aganice, and on the underside 

 it is creamy white, with a sharply defined straight inner edge 

 and a nearly parallel (barely angulated) outer edge, broken 

 by the usual internervular streaks. 



Expanse of wings 71 millim. 



Kasungu Mountain, 7425 feet alt., Nyika, March 1st, 1896. 



The markings of the piimaries in this species form an 

 almost rectangular zigzag, which runs obliquely from just 

 beyond the middle of the costal to just below the middle of 

 the outer margin. 



Alcena rettculata, sp. n. 



( . Above greyish black ; primaries with the costal margin 

 to the middle narrowly ochreous ; three spots in the cell, the 

 first two squamose, the basal one elongated, cuneiform, the 

 others subquadrate ; a squamose whitish patch below median 

 vein from base to near the middle of the wing; an angular 

 white macular bar, consisting of seven spots, from the costa 

 to the first median branch beyond the cell ; traces of discal 

 and submarginal series of small spots, the first five spots and 

 the last of the discal series and the second and three last of 

 the submarginal series being white, and therefore fairly well 

 defined ; fringe white, flecked with black : secondaries with 

 ashy hairs over the basal half; a white macular angulated 

 band, consisting of eight spots, beyond the middle, the third 

 and fourth spots large, elongated, and confluent, the dividing 

 vein being white instead of black, the last spot with a grey 

 continuation up the abdominal border ; a submarginal series 

 of six squamose white spots : body black, margins of eyes 

 snow-white; collar ferruginous; terminal segments of abdomen 

 banded with ochreous ; anus ochreous. Under surface some- 

 what like that of A. nyassce^ but mostly cream-coloured and 

 black, the reticulations being much more complete; the 

 primaries with narrower postmedian band and continuous 

 black submarginal line ; the secondaries with no complete 

 open central space, the black bars being all connected ; palpi, 

 tibiae, tarsi, and ventral surface of abdomen orange-tawny. 



Expanse of wings 36 millim. 



$ . Larger and much whiter on both surfaces ; the second- 

 aries above white, reticulated with greyish and stained on the 

 external area with creamy ; below, the submarginal black 

 line is wanting on the primaries and ill-defined on the 

 secondaries. 



Expanse of wings 40 millim. 



(J , Kasungu Mountain, 5400 feet alt., Nyika, March 5th, 

 1826; ? , Mtambwi Hill, Deep Bay, Jan. 6th, 1896. 



