NO TODONTID^ 115 



ever sallow or poplar is plentiful, except in the Scottish Isles, 

 from which I have no record of its appearance ; yet never very 

 common, and principally confined to fens, marshes, and damp 

 woods. The records extend from Kent and South Devon to 

 Moray and West Ross, and in Ireland from Wicklow to London- 

 derry and Donegal. Abroad it is found throughout central and 

 northern Europe, Southern France, Spain, Italy, and Corsica. 



4. N. tritophus, Fah. — Expanse 2 inches. Fore wings 

 rusty-brown, with the base, and a very large ovate apical 

 blotch, blackish ; hind wings white. 



Antennse of the male rather shortly pectinated, light 

 brown ; head covered with raised grey-brown scales ; thorax 

 broad, not crested, dark brown, faintly dusted with ashy-grey, 

 and in the middle tinged with reddish, shoulder lappets a 

 little raised, blacker brown ; abdomen rather long and stout, 

 yellowish brown with a small blackish raised dorsal tuft of scales 

 on the basal segment. Fore wings very ovate, costa slightly 

 curved, more so toward the apex, which is very bluntly angu- 

 lated; hind margin oblique, very slightly rounded except 

 towards the anal angle ; dorsal margin also rounded and 

 slightly angulated in the middle, where is situated a triangular 

 prominent tuft of blackish scales ; general colour rusty-brown 

 or reddish-brown ; close to the base is a much angulated, 

 thick, black line, followed by a broad, blackish transverse 

 band nearly filling the space to the normal first transverse 

 line, which is perpendicular, rippled and indented, blackish ; 

 beyond this, at the costal edge of the discal cell, is a triangular 

 brown or blackish spot edged with whitish ; beyond this the 

 usual discal streak or lunule, long, reddish, edged with white, 

 and clouded outside with smoky-black, this last being the 

 commencement of a very large ovate smoky-black blotch 

 which occupies most part of the apical space from the costa 

 to below the middle of the wing, but is bounded toward the 

 hind margin by a broad stripe of the ground colour. From 

 the dorsal margin near the anal angle commences the second 



