80 dS. w. i. HOLLAND oK The afbioan [Jan. 14, 



Plastingia ehai-ita, Ploetz, S. E. Z. vol. xl. p. 356 (1879). 



$ . Apaustus argyrosticta, Ploetz, S. E. Z. vol. xl. p. 358 

 (1879) ; id. ibid. vol. xlv. p. 156 (1884) ; id. 1. c. A. argyrospila, 

 Ploetz, MS. 



Ceratriahia argyrostidta, Wats. P. Z. S. 1893, p. 117. 



Ilah. Cameroons, Valley of tbe Ogove, Aburi (Ploetz). 



This is a very common species. I have an enormous series, 

 taken at different times and places. There is not a shadow of 

 doubt in my mind that the above synonymy is correct. The 

 females are very variable upon the upperside of the wings, but 

 agree very well with the males on the underside, though in both 

 the male and the female sex the silvery centres of the spots on the 

 underside are often suSused with dark brown, and the silvery 

 colour is rendered obsolete. 



CoBALUS, Hiibn. 



274. C. (?) coETiNxrs, Mab. 



Cobalus corvinus, Mab. Bull. Soc. Ent. France, (6) vol. ix. p. clxix 

 (1889). 



Hah. Sierra Leone (Mabille). 



I allow this species to remain iu this genus, to which it has been 

 assigned by its author, though it is quite plain to me that it does 

 not really belong here. I have the type before me as I write, but 

 as it is unique and in poor condition, so that I cannot without 

 great risk of further injury make a close anatomical investigation, 

 I must leave its location undecided. It seems superficially to show 

 a general relationship to pidvina, Ploetz, and nox, Mab., but tbe 

 wings are more fragile and relatively longer, and the insect is not 

 so robust. 



275. 0. (?) ATUio, Mab. 



Cobalus alrio, Mab. 0. R. Soc. Ent. Belg. 1891, p. Ixxxii. 



A figure of the type kindly lent me by Mons. Mabille suggests 

 that this is the female of Semalea pulvina, Ploetz (q. v.). It is 

 certainly not a Oohalus, as that genus is South-American. 



Andeohtmus, gen. nov. 



Antenna more than half the length of the primaries, slender ; 

 club moderate, fusiform, slightly recurved at the tip. Palpi 

 divergent, with the first and second joints heavily clothed with 

 scales, the third joint naked, aciculate, erect, as high as the vertex 

 of the head. Fore wing elongated, with the inner margin con- 

 siderably longer than the outer margin, blunt at the apex, and 

 slightly excavated between the extremities of veins 1 and 3. Cell 

 narrow, elongated, nearly two-thirds the length of the costa ; vein 

 12 reaching the costa before the end of the cell ; upper discocellular 

 short, but distinct, at right angles to the upper margin of cell ; 

 middle discocellular relatively long, curved inwardly; lower disco- 



