434 Colonel C. Swinhoe's Revision of the 



Nyctemera manifesta, nov. 



(J. Belongs to the hesjjeria group, and is closely allied to that 

 species, but there is no sign of orange or ochreous on the hind-wings ; 

 the submarginal spots on both wings are somewhat differently placed, 

 forming a continuous and evenly-disposed curve, the upper one the 

 largest, lessening in size hindwards on both wings ; in hesperia and 

 its allies the subcostal spot of the fore-wings is displaced inwards, 

 making the row of spots angled at its upper part, and in the 

 hind-wings the second spot (and sometimes the fourth) runs into the 

 white of the wing. 



Expanse of wings Z\ inches. 



Hob. Congo. 



Nyctemera cafra. 

 Bomhyx cafra, Druiy, 111. Ex. Ins., iii, pi. 5, f. i (1780). 

 2 ^, Sierra Leone. 1 ^, River Niger. 1 ^, S. Nigeria. 



NyCTEMERA OCCIDENTIS. 



Otroeda oeeidentis, Walker, ii, 403 (1854<). 



1 i^, Sierra Leone (type). 1 ^, Cameroons. 1 $, R. Gaboon. 

 1 $, Rio del Rey. 1 f, S. Nigeria. 



Nyctemera vesperina. 

 Otroeda vesperina, Walker, ii, 403 (18o4). 



2 ^, Congo, including the type. 



Nyctemera varun^a. 



Otroeda varunxa, Druce, P. Z. S., 1882, p. 780. 



1 t, W. Africa. 



The type, from Congo, is in coll. Druce. 



'Genus Rajacoa, nov. 



(J . Antennse bipectinated to the tips, pectinations ciliated and of 

 moderate length ; palpi upturned, very short and hairy ; fore-wings 

 with discoidal nearly straight, vein 2 from middle of cell, 4 from 

 lower end, 3 from half-way between, 5 from below middle and some- 

 what curved, 6 from below upper end, 7 and 8 stalked, 9 from 10 

 anastomosing with 7 and 8 to form the areole, 11 from one-third 

 before end of cell ; hind-wings with lower half of the discoidal pro- 

 truding, vein 2 from one-third before lower end of cell, 4 from end, 



