548 Lord Walsingham’s catalogue of the Pterophoride, 
Blastobasis decolorella, Wl|stn. 
Laverna (?) decolorella, Wistn., Ann. and Mag. N. H. 
(3 s.), I., 122 (1858) ;} Wkr., Cat. Lp. Ins. B. M., 
XXX., 885 (1864); Rbl., Ann. K. K. Hofmus. 
IX., 92-8 (1894). 
Madeira ;' Funchal, and San Antonio da Serra, eighteen 
specimens (Baker). Mr. Leech also took this species at 
Madeira in May. 
This species is a true Blastobasis ; its neuration is as 
follows :— 
Forewings, 12 veins; 7 and 8 stalked, both to above apex. 
Hindwings, 7 veins ; 3 and 4 coincident, 5 from the same point as 
3-+-4, 6 and 7 separate and parallel. 
It exhibits considerable variation in size, in colour, 
and in the distinctness or suffusion of the spots and 
markings. The drawing made by Westwood was 
evidently taken from one of the more reddish-ochreous 
specimens, whereas the more prevalent form appears to 
be whitish-ochreous or whitish-fawn-colour with brown- 
ish and umber spots and scales. The slender dark lines 
across the abdominal segments are persistent throughout 
the series, but these occur also in other species, and must 
not be too much relied on. A description of the well- 
marked paler forms may be useful. 
Antenne distinctly notched and finely ciliate in the g; basal 
joint enlarged, pectinate beneath ; brownish-grey, whitish-fawn 
beneath. Palpi whitish-fawn, second joint externally brown except 
at its apex. Head, face, and thorax whitish-fawn. Forewings 
narrow, elongate, lanceolate towards the depressed apex ; very pale 
fawn, slightly suffused with fawn-brown scales across the middle 
and at one-third of the fold; an umber patch on the middle of 
the dorsal margin, above which is an umber spot on the disc before 
the middle of the wing, followed by a second spot of the same 
colour below and beyond it ; two umber spots at the end of the 
cell, the lower more conspicuous than the upper and almost parallel 
with it; these are followed by a sinuate brownish shade com- 
mencing on the costa in the beginning of the costal cilia and ending 
at the anal angle, much bowed outwards in the middle ; towards the 
apex of the wing a few slight brownish dots and scales are scattered 
about the apex and apical margin ; cilia very pale fawn. Hind- 
wings shining, pale fawn-grey, cilia very pale ochreous. Abdomen 
