Genera and Species of Pyralide. 469 
blackish cloud before hind margin ; a row of small black dots 
_at base of fringes; fringes reddish in their inner half, dark 
leaden grey in their outer; costa between the two lines with 
three or four black spéts. Hind wings rather paler; with 
two parallel dark grey lines before the middle and two more 
beyond, followed by a third less distinct; fringes and hind 
margin as in fore wings. Head, face, patagia, and abdomen 
concolorous with wings. Underside, except the fringes, less 
red; fore wings with one, hind wings with two dark fascia. 
Expanse of wings 16 millim. 
One male from Masuri. 
PETTA, gen. nov. 
Akin to Diplopseustis, Meyr. Fore wings long and 
narrow : hind wings twice as broad as fore wings; both with 
an indentation on the hind margin below the apex; agreeing 
also in the palpi and ocelli, but the tongue is absent; in the 
fore wings the first median appears to be wanting, the other 
two with the lower radial are on a common stalk from the 
lower end of the cell, which is short, as far as can be made 
out without denudation; the first two and the other three 
subcostals are on a common stem. In the hind wings the 
first median nervule is present, as in Diplopseustis. 
Type Petta alternata, sp. n. 
Petta alternata, sp. n. 
Fore wings whitish, largely suffused with dark grey ; first 
line white, edged with dark, oblique from costa, then curved 
inwards parallel to hind margin; second line white, near 
hind margin and parallel to it except opposite the indentation, 
where it forms a very distinct right angle outwards; above 
the anal angle it runs suddenly basewards, becoming obsolete 
for a short distance, and reaches the inner margin just beyond 
the middle as a curved white mark; on the costa between the 
two lines are three broad oblique black blotches, finely edged 
with white, the third being much smaller than the other two; 
both the lines are flanked on either side by a thick grey shade ; 
a fine marginal dark grey shade; fringe dark grey, with a 
darker line near base, which is white. Hind wings whiter, 
with a dark grey cloud in middle, and a much curved outer 
white line, edged with dark from before costa to above anal 
angle; margin and fringes as in fore wings. Thorax and 
abdomen grey ; collar, face, and palpi white, the hairs of the 
second joint of the palpi externally black ; antenne ochreous, 
each segment above with a round black spot. Underside 
