1875.]} SPECIES OF SPHINGID. 245 
the whitish discocellulars ; two wavy brown-edged whitish lines; a 
reddish streak near external angle, and a black spot on inner mar- 
gin ; a brownish oblique nebula from outer margin near the angle 
to costa; outer margin partially but narrowly edged with dark 
brown: secondaries ochreous, outer margin broadly ferruginous, 
dotted with brown scales ; inner margin edged with blackish: body 
greyish brown; abdomen reddish at the sides: wings below reddish 
ochreous, irrorated with brown; costa greyish, a whitish spot at end 
of each cell; primaries with inner margin grey, outer margin 
broadly brown; secondaries with abdominal area yellowish, two 
central transverse brown lines: body below grey, sprinkled with 
ferruginous scales. Expanse of wings 1 inch 2—24 lines. 
Silhet. Type, coll. F. Moore. 
Subfamily Ca #RocamMPin&. 
Genus AcosmERYx, Boisduval. 
General appearance of the Mimas group of the Smerinthine 
(Polyptychus): body more robust; male with a short anal tuft ; 
palpi much larger ; wings shorter and broader ; primaries with outer 
margin subangulated in the middle and generally undulated ; disco- 
cellulars below obscured by long scales: secondaries much broader, 
costal margin more convex, inner margin longer; outer margin 
more or less undulated: larva of the Cherocampa type. 
The larva of A. anceus is figured in Moore and Horsfield’s Cata- 
logue, pl. ix. fig. 4. I have also seen a figure sent by S. N. 
Ward (from Canara) te Mr. Moore, which appears to be either a 
variety of the same larva or a distinct but nearly allied species; the 
moth not being so well figured as the larva, I cannot be certain ; it 
is possible that it may be A. sericeus: the anal horn of the larva is 
long, dark, and curved. 
18. ACOSMERYX CINEREA, li. sp. 
Allied to A. sericea, but both sexes generally coloured as in 4. 
anceus 2, silvery grey tinted with brown ; primaries crossed by six or 
seven oblique pale brown lines, and from costa to external angle by 
a brown bar ; outer margin brown, bordered internally by a nebulous 
silvery streak; secondaries crossed beyond the middle by a pale 
brown bar, apex and outer margin pale brown, bounded internally 
by a reddish tint : body brownish grey ; antennz testaceous: wings 
below very similar to M. sericea, but altogether paler, very slightly 
tinted with reddish ; secondaries crossed by four indistinct brown 
lines in pairs, apex grey : body below pale reddish brown. Expanse 
of wings 3 inches 7 lines. 
Silhet (Argent). Type, B.M. 
We have three example of this species; it may at once be distin- 
guished from A. sericea (irrespective of coloration) by the less-pro- 
duced primaries, with scarcely undulated outer margin. Mr. Moore 
has a pair from Silhet and N.E. Bengal, which have the primaries 
coloured like 4. sericea, 
