DESCRIPTIONS OF TWO SPECIES OP LEPIDOPTERA. 75 



This species seems to be decidedly rare at Portland, as, though I 

 worked for it in the only locality where it occurs, which is rather 

 limited in area, I only succeeded in getting altogether eight 

 specimens this year. 



It may be described as follows : Exp. al., 4}'" 5 J'". Ground 

 colour of fore-wing pale putty colour, generally much sprinkled 

 with dark grey scales, especially towards the inner and hind 

 margins ; a narrow blackish line crosses the wing close to the base 

 and is immediately followed by a blackish spot ; the three usual 

 spots are black, and there is sometimes a small blackish indistinct 

 spot on the inner margin at the inner edge of the pale fascia : this 

 fascia is of the ground colour without any dark scales, very 

 distinct, thinnest in the middle, and consists of two opposite spots, 

 which are sometimes joined, but more often very slightly separated 

 from each other by a few dark scales ; it is placed three-fourths of 

 the way from the base to the tip of the wing. Fringes like the 

 rest of the wing. Hind-wing pale fuscous, a little darker at the 

 apex ; face and palpi very pale ochreous, except the last joint 

 of the palpi, which is marked with grey towards the tip ; eyes 

 black ; antennae black, with small indistinct pale rings ; head and 

 thorax like the fore-wings ; body like the hind-wings, except that 

 the tip is pale ochreous; legs pale putty-coloured, ringed with 

 grey. 



This species resembles umlrosella in the shape of the wings and 

 pale fascia, but the black colour of the latter with its beautiful 

 purple gloss at once separates the two species. Mundella appears 

 to have broader and more sharply pointed wings than either this 

 species or umbrosella ; but I think that this is partly due to the 

 fact that the darker colour of the fringe in most specimens of 

 mundella causes the wing itself to stand out strikingly and appear 

 shorter than it is when compared with that of umltrosella. The 

 tip of umbrosella also appears to be more rounded, owing to the 

 difficulty of seeing where the fringe begins, the fringe itself being 

 rounded on the outside margin. Mundella is, so far as my 

 experience goes, quite destitute of a pale fascia, which serves to 



