new or little known Heterocera from Madagascar. 597 
a basal-median and postmedian angulated transverse black line; 
the basal line with white on both sides, the other two lines with 
white at costa only, the whole wing covered with minute black 
dots. H.w. orange, with ill-defined fuscous margin; underside 
orange, with dark central lunule in both wings. In the 2 the dark 
lines are ill-defined, but there is no indication of a central lunule. 
Exp. ¢ 42, 2 70 mm. 
Orgyia malgassica, n. sp. (Plate XXXII, fig. 21.) 
Head, thorax, and legs greenish-grey, palpi and antennae brown, 
abdomen smoky, paler beneath. F.w. greenish-grey with white 
marks on the costa at the origin of the transverse lines; basal 
line black paler on the outer side antemedian line nearly straight, 
postmedian line angulated at costa and then straight, both black; 
near the end of the cell is a dark patch followed by an irregular 
paler blotch, subterminal line angulated and pale. H.w. uniformly 
dark smoky, fringes paler. 
Exp. ¢ 32 mm. 
The fact that only males were taken is perhaps an 
indication that the females have only partially developed 
wings, and the species should be regarded as an Orgyva. 
In some specimens both hind-wings and underside are 
much paler. 
Lymantria nigrostriata, n. sp. 
Head, thorax, and terminal joint of palpi buff, legs black with 
white hairs on the tibiae, antennae dark brown, abdomen buff, but 
darker on back. F.w. white with scattered black scales, rather 
more numerous at base of wing, along the costa, and at end of cell. 
H.w. white, without black scales, and rather yellower on inner 
margin. 
Exp. 38mm. 1 3. 
Lymantria parvula, n. sp. (Plate XXXII, fig. 29.) 
Head, legs, antennae, and thorax grey; palpi darker; abdomen 
tinged with ochreous. F.w. whitish at base then dark grey ex- 
tending to nearly the postmedian line before which is an irregular 
white band; the postmedian line itself is angulated and at the angle 
appears in the form of two dark dashes, beyond this the wing is 
pale grey becoming a little darker at the apex, a terminal row of 
