780 MR. H. DRUCK ON NEW HETEROCERA. [Dec. 19, 
thorax spotted with black. Abdomen yellow above, black on the 
underside. 
Expanse 22 inches. 
Hab. Fast Africa, Nyassa ( Thelwall). 
This beautiful species is allied to H. bellatrix, Dalman, from 
South Africa. 
Fam. NYCTEMERID®. 
Nyctremera, Hibner. 
NYCTEMERA ACR&INA, 0, Sp. 
Primaries dusky brown; the nerves all black, except on the white 
band which crosses the wings from about the middle of the costal 
margin nearly to the anal angle. Secondaries—the basal half pure 
white, the outer half yellowish brown, shading to dark brown on the 
costal margin. Antenne black. Head, thorax, and upperside of 
abdomen brown; underside yellow. 
Expanse 3 inches. 
Hab. West Africa, Calabar. 
I at first thought that this species would be better placed in the 
genus Aletis; but on comparing the neuration with specimens of 
Nyctemera apicalis which 1 have had mounted in Canada balsam, I 
find that it is the same. This and the following species are the 
two largest described in this genus. At first sight they might easily 
be taken for Acree. 
NycTEMERA CHROMIs, n. sp. (Plate LXI. fig. 2.) 
Closely allied to the preceding species. The primaries the same, 
only slightly more yellow. Secondaries chrome-yellow, shading 
to pale brown on the outer margin. Underside the same as 
above. Head and thorax black. Abdomen brown above; underside 
yellow. 
Expanse 22 inches. 
Hab. West Africa (Thomson). 
Orroepa, Walker. 
OTROEDA VARUN ZA, 0. Sp. 
Primaries pale chrome-yellow, partly crossed by two black bands, 
broadest on the costal margin, tapering to a point near the anal 
angle; apex broadly black ; a submarginal row of five white spots, 
the first two the largest. Secondaries pale chrome-yellow, the 
outer margin black, with a submarginal row of white spots. Under- 
side the same as above. Head black. Thorax and abdomen 
yellow. 
Expanse 22 inches. 
Hab. West Africa, Congo. 
This species is allied to Otroeda vesperina of Walker. It is a 
much smaller and more pale-coloured insect. 
