1887. 1 7 



junction in the middle form a conspicuous angle; central fascia of nearly/ uniform 

 width throughout, with, on its outer edge, a sharp angle, corresponding to that of 

 the basal patch, and more or less interrupted in the centre by grey and rust-coloured 

 scales. Ocelloid patch with very faint lustrous margins, filled up with rusty-grey 

 Bcales, without any black lines. 



The costal geminations indistinct, dull lustrous. Cilia dark grey, paler at the 

 anal angle ; with a distinct sub-apical spot, which intersects the basal line, and is 

 sometimes risible also in the apices of the cilia. 



Head, thorax, face, and palpi dark fuscous ; abdomen dark leaden-grey. 



Hind-wings white, with the base and all the margins, especially towards the 

 apex, broadly grey-brown. 



Ahiegana, Dup. — Fore-wings gi'ey-brown, tinged with rusty-brown ; markings 

 dark brown. Basal patch with its two arms not curved, the upper slanting obliquely 

 outwards, the lower vertical, forming only a rounded or obtusely angled projection, 

 where they meet ; central fascia narrow on the costa, broadening towards the anal 

 angle, with only a rounded projection on its outer edge, as in the basal patch, and 

 uninterrupted in the middle. Ocelloid patch with distinctly lustrous margins, filled 

 up with black lines, which, in the $ , are contiguous ; costal geminations distinct, 

 bright. Cilia grey ; the pale spot below the apex very indistinct, scarcely ever 

 interrupting the basal line. 



Head, thorax, face, and palpi pale fuscous ; abdomen light grey. 



Hind- wings whitish (tlius not so white as in ^_y^;?!<KaMa), with the veins and 

 margins liglit grey. 



Tygmaana is a smoother, rather duller-looking insect, with straighter costa, and, 

 therefoi'e, narrower and more elongate-looking wings, with a more oblique hind- 

 margin, not indented below the apex, as that of ahiegana is to a slight extent. 

 Heinemann gives 2,\"' — 2 J'" as the length of the fore-wings in each species ; 

 Herrich-Schiiffer says abiegana h'" — 5V" ; pygniaana, 5'". Judging from what few 

 specimens I have seen at present, I should consider pygmceana slightly larger on 

 the whole than abiegana. 



The question then arises whether Haworth's two specimens, from 

 which, I expect, "Wilkinson's and Stainton's descriptions were taken, 

 wei'e really fygmwana, or were not rather ahiegana. The " three 

 longitudinal black lines of the ocellus " can certainly only belong to 

 ahiegana, which is also more " glossy " than pygmceana. 



An examination of one of Haworth's original specimens, still 

 extant in the collection of the British Museum, satisfies me that his 

 species was really ahiegana : this is fully confirmed by his description 

 of suhsequana, p. 418 : — 



"AlcB anticcB grisecB,magis lucidcB, longioresque quam in prioribHs,vix manifests 

 cinereo-argenteo strigatce. Juxta angulum ani liueolte seu potius strioloe 3 tenuis- 

 simse, contiguee atrse {marginis postici). Posticise albidaj angustcB, apice late fuscae, 

 ciliis amplioribus quam in cceteris hujus generis. Cilia anticarum etiam ampla, 

 cinerea nitidissima. 



Habitat cum prcecedeiitibiis (Strobilana). 



Imago Apr. ?. 



