AGIDALIA TRIGEMINATA. 93 
One moth, a male, appeared on the 14th of August, 
the others remaining over the autumn and winter. 
Mr. Wellman, more fortunate, bred upwards of a 
dozen specimens between the 3rd and 16th August. 
The full-grown larva is about three-quarters of an 
inch in length, and although its shape is really more 
cylindrical than flattened, the puffed spiracular region 
gives the appearance of a rather flattened form ; its 
breadth is greatest at the ninth segment, from which it 
tapers by degrees both behind to the anal tip and in 
front towards the head, which is the smallest segment ; 
it is very rugose, each segment being subdivided into 
twelve portions by deep wrinkles; the segmental divi- 
sions deeply cut, and much less in diameter than the 
seoments themselves. 
Its colour is a dingy deep brown, relieved along 
the spiracular ridge by an almost continuous streak of 
dirty pale ochreous, interrupted at the segmental 
divisions. On the hack, as far as the beginning of the 
. tenth segment, is a very faint pale dorsal line, chiefly 
visible before and behind each segmental division, 
where it is palest, and set off by being bordered by 
thick black strokes; from these, two blackish streaks 
diverge obliquely towards the subdorsalregion, forming 
a kind of A mark pointing forwards on the anterior of 
the segment, the middle part of which is much suffused 
with dark brown; the subdorsal line is also blackish 
but not continuous, being interrupted twice on each 
segment; on the tenth segment there is a central, 
somewhat star-shaped, whitish spot, and the remaining 
posterior segments are brown without any definite 
markings. ‘The ventral surface is dark brown, and 
contrasts strongly with the pale spiracular ridge; 
the head is shining brown. ‘The larva of this species 
is further distinguished from those of its congeners 
by having, from each of its wart-like tubercles, a 
rather long dirty ochreous bristle, curved forwards on 
all the segments as far as the tenth, but curved back- 
wards on the other three; these bristles have the 
