ME. A. G. BUTLER ON THE SPHINGID^. 641 



Judging by the figure, Boisduval's species is referable to this genus. 



DlLUDIA TKANQUILLARIS, 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 Eur y glottis; similar in pattern, but at once to be distinguished by the 

 much smoother thorax, shorter and more slender antenna?, 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 tegulae, back of 

 thorax, and front margins of the abdominal segments white ; antennae 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. 



