MR. A. G. BUTLER ON THE SPHINGIDZ. 641 
Judging by the figure, Boisduval’s species is referable to this genus. 
DILUDIA TRANQUILLARIS, n. sp. 
_ 2. Nearly allied to D. grandis, slightly smaller, the markings much less strongly 
defined, the central irregular transverse congregation of parallel bands broader; black 
band only visible on costal area; the apical patch more uniformly dark grey, much 
narrower and longer, oblique behind, more narrowly black-bordered ; secondaries with 
only one abbreviated black zigzag band across the grey anal patch; body slightly 
browner in tint; head not varied with white; abdomen with lateral diffused brown 
longitudinal bands instead of the black spots; wings below more uniform in colour, the 
transverse bands less strongly marked, narrower, and nearer to the outer border, the 
central blackish band of primaries obsolete. Expanse of wings 5 inches 3 lines. 
Darjeeling (Atkinson). Coll. O. Staudinger, 
At first I was inclined to think this might be the female of D. grandis; but a com- 
parison of the sexes of allied species convinces me that the differences are too great to 
admit of this. 
APOCALYPSIS, n. gen. 
Allied to Ewryglottis; similar in pattern, but at once to be distinguished by the 
much smoother thorax, shorter and more slender antenne, more prominent and less 
crested head. Type :— 
A. VELOX, n. sp. 
Primaries long and pointed, sepia-brown, with the veins, a chain-like discal excavated 
transverse band, and some oblique lines connecting its outer border with the apices of 
the radial veins pale brown; an oblique white streak from the apex to the upper 
radial: secondaries smoky brown, the costal and abdominal areas paler; a basal hairy 
patch, two diffused abbreviated bands (distinct towards abdominal area), and a broad 
outer border (darkest at anal angle) deep brown; margin blackish, the fringe and a 
diffused narrower streak at anal angle white: body smoky brown, head and collar darker ; 
a central longitudinal streak, the borders of the thorax, and a series of lateral abdo- 
minal transverse bands black-brown; lateral margins of head, fringe of tegule, back of 
thorax, and front margins of the abdominal segments white; antenne whitish, with 
testaceous serrations. Wings below smoky brown: primaries with the internal area 
whitish ; base of discoidal cell testaceous; a white apical streak, less distinct than above: 
secondaries with the base and abdominal area whitish; two diffused ill-defined trans- 
verse bars; margin as above: body below smoky brown; palpi, sides and hinder 
part of pectus, and centre of venter white. Expanse of wings 6 inches 2 lines. 
Darjeeling (Atkinson). Coll. O. Staudinger. 
The anterior wings of this species are coloured almost exactly as in E. aper from 
Bogota. 
