256 Mr. H. Druce's Descriptions of 



and continuing narrowly to the anal angle where there is a black 

 line placed obliquely just above it. The cilia is black, whitish at 

 the base between the nervules. Under-side : Primaries rich orange, 

 paler along the inner margin ; black spots arranged as in E. aerseina 

 with an additional black spot below the cell placed below the central 

 cell spot. The outer margin is broadly paler, bordered inwardly 

 with a black line, heavily covered with metallic silver scales and 

 divided by the black nervules. Cilia black. Secondaries : Ground 

 colour pale buff with the black spots large and distinct, the basal 

 area suffused with bright carmine, and a bright carmine band placed 

 between the ultra-median row of black spots and the sub-marginal 

 black line. Outer margin and metallic scaling as in primaries. 



Legs reddish-orange ; palpi orange below, black above. Antenna? 

 black ; brownish at the extreme tip. Head black, yellow between 

 the eyes. Abdomen deep orange-red above with a row of black 

 spots ; sides deep black with white spots ; under-surface clothed 

 with more or less orange hairs. 



Expanse 1 T V inches. 



Hab. North-west Rhodesia. 



Although doubtless allied to E. acrxina this insect 

 appears to have many points of distinction, notably the 

 broad black outer marginal border to the fore- wing above; 

 the deep black cilia; and the carmine on the under- 

 surface of the hind-wings. It is also a larger insect. 



Cooksonia, gen. nov. 



Allied to Erikssonia,* Trimen, from which it differs in the fore- 

 wing by the 4th subcostal nervule being emitted nearer to the base 

 and by the subcostal nervure reaching the maTgin further below 

 the apex ; and in the hind-wing the stalk of the submedian 

 nervure is much shorter. The antennce are longer and when viewed 

 from above appear to be but slightly thickened at the extremities, 

 but when examined from the side they present a broadly spatulate 

 club, in this respect entirely differing from Erikssonia.'f The palpi 

 which are not clothed with thick scales to anything like the 

 same extent have the terminal joint less than half as long ; almost 

 minute. 



* Erikssonia, Trimen, P. Z. S., 1891, p. 91. 



t This may possibly be due to pressure in packing the specimen, 

 which, however, shows no signs of flattening as regards the abdomen 

 or thorax, and is in very perfect condition. 



