SPILAECTIA. — DONDEEA. 
79 
Spilarctia castanea. (Plate CLVIII. figs. 26, 27.) 
Expanse, J* H, ? Ij^ inch. 
Male. Fore wing ruddy chestnut-brown, with black markings ; the costa narrowly 
black ; two small subbasal spots on costal and subcostal nervures ; then an irregular band 
from costa to median nervure, below which is a small spot, below which again is an irregular 
blotch on the inner margin reaching to the middle of internal interspace ; a small spot at 
upper end of cell, just beyond which are two suiDcrposed spots from the costa; from near 
the apex to centre of inner margin is an exceedingly irregular band of patches, varying in 
shape in different specimens, and taking the form of spots near the apex, then a large blotch 
from discoidal to first median nervulc, then much constricted in interno-median interspace, 
and expanding again on inner margin, when it joins the antemedial blotch. Cilia black. 
Hind wing dark brown, with a black lunule at end of cell. 
Female. Fore wing paler chestnut, with the markings reduced to a small black subbasal 
spot ; a spot on each side of submedian vein one-third from base, the one above it largest; a 
minute spot at end of cell, with another above it below the costa ; an oblique band of five 
black spots from third median ncrvule to centre of inner margin. Cilia of same colour as 
the wing. Hind wing rosy, with a large black spot at end of cell ; two others between it on 
inner margin, which are sometimes almost obsolete ; a series of seven large black sub- 
marginal spots between the nervules, the one between second and third median nervules 
sometimes obsolete. 
Antennae of both sexes dark brown ; thorax chestnut-brown ; abdomen rosy red, with 
dorsal and lateral series of black spots. 
LITHOSIIN^. 
Dondera alba, Moore. (Plate CLVII. fig. 25.) 
Dondera alba, Moore, Lep. Ceyl. ii. p. 48. 
Expanse ^ 2 inches. 
Male. Similar to the female, but with the inner margin of fore wing much shorter, so 
that the outer margin is much more oblique. The hind wing has the inner margin much 
shorter and the outer margin with a deep scallop from anal angle to one-fourth from apex, 
somewhat as in the male of Argina, but much more extensive, and with the anal angle 
rounded instead of pointed. Antennse similar to those of female. 
Pupa. Yellow ; a broad black band encircling each abdominal somite ; black spots on 
thorax and streaks on wing-cases. 
Found enveloped in a slight web under a ledge of rock. The hairs of the larva were 
mixed with the web, and the east skin of the larva was present ; its colours had apparently 
been as follows: head fulvous, the other segments dark; a dorsal series of large, round. 
