168 j MR. A. G. BUTLER ON NEW [ Mar. 6, 
oblique, broad below, very narrow upwards, and just meeting behind 
the rostral, vertical 3-sided shield-shaped ; eyes very small, near the 
front of the ocular shield; scales in 19 rows round. the anterior por- 
tion, in 17 round the niiddle of the body ; abdominals 226; anal 
bifid ; subcaudals 6 pairs, length 214 inches, girth very nearly 2 
inches. Colour uniform brown, but somewhat paler below; a mar- 
ginal yellow band along the side of the trunk for a short distance, 
commenciug at the 4th labial ; tail black below, but encircled by a 
yellow band. Caudal disk rather flat ; the scales with 4-5 prominent 
keels ; terminal one very large, bluntly bicuspid. 
Hab. Anamullay Mountains, 4000 feet elevation ; very rare. 
3. Descriptions of new Species of Heterocerous Lepidoptera 
in the Collection of the British Museum. By Artuur 
G. Buruer, F.L.S., F.Z.8., &e. 
[Received February 16, 1877.] 
The followiug interesting new species are all based on compara- 
tively recent additions to the national collection. 
SPHINGIDZ. 
Di1LuDIA CHROMAPTERIS, 0. Sp. 
Primaries silvery grey, crossed by subangulated lunulated brown 
lines, very indistinct at the base, most strongly marked upon the 
costal area; the usual apical patch bordered with dark brown, and 
from its infero-interior angle to the inner margin a series of five 
sinuated black lituree; the usual longitudinal black streaks on the 
median areoles, but the upper one much elongated and forking (from 
its outer extremity) into two clavate lines, which almost reach the 
outer margin ; discoidal stigma white, black-edged ; secondaries with 
the basal half bright ochre-yellow, the external half greyish brown ; 
two transverse central bands, the mner one black, the outer one 
dusky, dentated, bordered externally by pale grey diffused spots ; a 
large spot at anal angle, its inner half black, its outer half white ; 
fringe of all the wings white, spotted with brown; body grey, irro- 
rated with red-brown ; the head and collar with a central longitudinal 
inverted x-shaped dark-brown marking ; tegule bordered externally 
with black, and fringed with white hairs ; metathorax with a large 
central transverse blackish spot ; body with a central blackish line, 
and with lateral increasing longitudinal bands on each segment ; 
antennee reddish : wings below uniformly whity-brown; the base of 
primaries yellow to the centre of the discoidal cell ; fringe as above ; 
body below white: expanse of wings 3 inches !1 lines. 
Hab. Madagascar. 
This beautiful species seems to be allied to Sphinx jasmini of 
Boisduval; but the coloration of the secondaries and the uniform 
character of the under surface at once distinguish it, 
