ionac. 
pauperata. 
fuscitincta. 
paver a. 
ignatia. 
argenti- 
punctata. 
poliiia. 
niiida. 
99U CHADISRA. By Dr. M. Dratjdt. 
of a pure white colour. The male antennae of this species are pectinated, plain at the ends. Described from 
Paraguay. 
B. tonac Schs. (152 c). Forewing light grey with fine brown internerval longitudinal lines and a black 
basal and inner-marginal ray; post median vein-dots in a broad lighter area, a black dot in the lower cell-end 
also in lighter surroundings. The male shows the basal half much darker, also the apex of the wing, which 
contains a few thicker blackish-brown rays. The type described is a female of a rather common aberration 
with a blackisch-brown longitudinal patch from the lower cell-end to the margin between the veins 2 and 4. 
The more common form without this spot I denominate: pauperata /. n. (152c). Mexico. 
B. fuscitincta Dogn. The yellowish-brown forewing is dusted with violet, grey in the centre of the 
costal margin, with a black basal ray from the base of the costal margin; both the transverse lines very 
feeble, dentate, blackish, in grey dusting, a yellowish spot at the cell-end; median area somewhat lighter, 
yellowish subterminal internerval spots, some of them with lilack streaks. Hindwing brownish. Expanse of 
wings: 49 mm. French Guiana. 
B. povera Schs. is very different; forewing light pinkish brown with a black basal dot and two transverse 
lines, the anterior one angled in the cell, the posterior one obliquely from the apex to the centre of the inner 
margin and touched by a dark costal-marginal shadow. Hindwing blackish. Expanse of wings: 32 mm. British 
Guiana. 
B. ignatia Schs. Head and thorax Isabel-coloured, abdomen with blackish bands. Forewing light 
reddish-yellow, slightly dusted greenish, broadly red-brown and strewn with black at the inner margin and 
in the postmedian area excepting the costal-marginal part, intensified in the median area above vein 1 and 
forming a blackish-brown longitudinal streak; transverse lines marked by black scales, the anterior one double 
at the costal margin, 2 rows of black scales behind the posterior line, the veins here scaled black and white; 
apex dusted white with a black streak between 7 and 8, shorter streaks between 5 and 7. Hindwing white, 
shaded with reddish-yellow at the inner margin and narrowly at the distal margin. Expanse of wings: 38 mm. 
Brazil (Blumenau). 
B. argentipunctata Dogn. is very different. The brownish-yellow ground of the forewing with red-brown 
veins and several transverse rows of silvery white internerval spots bordered with dark brown; three dark 
violettish-brown spots: at the base of the costal margin, the second behind it extends to the lower cell-angle 
and along the postmedian spots back to the costal margin, the third above the anal angle. Hindwing diaphanous 
white. Expanse of wings: $ 37, $ 46 mm. French Guiana. 
88. Genus: €'ha<llsi*a Wkr. 
A very large genus most of the species of which had been assigned to the genus Blera Wkr., but which 
were now united with Chculisra ; the species with a more pointed apex of the forewing had belonged to Blera, 
those with a rounded apex to Ghadisra, no other anatomical differences having existed. The male antennae 
are shortly ciliated, the short hairy palpi hardly project beyond the frons; neuration not different from that 
of the neighbouring genera; vein 5 of forewing arises from above the centre of the cross-vein, 6 from the 
centre of the areole; 3 and 4 of forewing arise together from the lower cell-angle, 6 stalked with 7 from the 
upper cell-angle, the costal vein proceeds near the cell-end. The species occur only in Central and South America 
and are often very sexually dimorphous, so that it is sometimes difficult to separate them. 
Type of genus: Gh. bi-pars Wkr. from Ceylon. (Vol. X, p. 636, pi. 84 f). 
C. politia Gr. (= ceruroides Wkr., rogenhoferi Fldr.) (152 c) represents the typical species of the 
genus Blera. Fore wing white, slightly strewn with grey with finely dentate black transverse antemedian and 
post median lines shaded with dark brown on the averted sides, the posterior line much broader; the latter 
proceeds near the apex and extends in a distally concave bow almost to the anal angle; 3 more or less distinct- 
fine undulate brownish transverse lines in the median area, and a streak at the cell-end, oblique scalariform 
streaks between the veins before the margin. Hindwing whitish, smoky at the margin. Colombia, Guiana, 
Brazil. Dyar proposes to separate ceruroides which is said to differ in the postmedian line being more excurved 
above the anal angle. 
C. nitida Schs. has silvery white forewings strewn with single brown scales, with small brown costal 
spots from which two finely dentate black transverse lines proceed, the posterior one of which forms an inward 
dent on vein 6 and is accompanied outside by a fine brown shadow which is double behind the cell; the marginal 
line is composed of lunular streaks, with black dots between them on the ends of the veins. Hindwing whitish, 
brownish on the veins and margin, with brown hair at the inner margin. Expanse of wings: 3 31, $ 34 mm. 
French Guiana. 
