1875. ] SPECIES OF SPHINGIDZ. 255 
spot, which is smaller ; secondaries brick-red, dusky towards base ; 
costa testaceous; a whitish nebula at anal angle enclosing the two 
usual dark brown spots: wings below coloured as in 7. sinensis, but 
slightly darker, the transverse lines also very similar, but better de- 
fined and rather wider apart in the primaries: expanse of wings, ¢ 
3 inches 3 lines, 2 4 inches 5 lines. 
Java (Horsfield). 3 2, B.M.;@, coll. F. Moore. 
Easily distinguished from T. dyras by its superior size and very 
much deeper colouring, also in the much more strongly defined 
transverse lines on the upperside of primaries and on the underside 
of all the wings. 
43. TRIPTOGON CEYLANICA. 
3. Smerinthus dyras(part.), Walker (descr.), Lep. Het.viii. p. 250. 
n. 13 (1856). 
Larger and broader than the preceding, the primaries olivaceous 
darker on both surfaces; the transverse lines less woolly, more sharply 
defined ; the eighth line with a well-rounded curve ; the spot larger : 
secondaries chestnut-red, abdominal area dusky in the centre, anal 
whitish patch as usual, black spots large : wings below more dusky 
than in the preceding species, with the transverse lines almost black ; 
the discal lines in primaries continued to inner margin, and the post- 
cellular lines to below third median braneh ; inner lines in secondaries 
much straighter, outer discal lines more waved : the body (as well as 
the wings) altogether browner in tint. Expanse of wings 3 inches 
8 lines. 
3, Ceylon (Fempleton). Type, B.M. 
44, TRIPTOGON SILHETENSIS, 0. Sp. 
Smerinthus dyras (sic), Boisduval, MS. (part. Walker). 
Nearly allied to the preceding, rather lighter, not quite so broad, 
the outer margin more strongly undulated, the apex more produced, 
the inner margin more excavated near external angle ; the transverse 
lines finer, not quite so defined, less angular; the blackish spots 
similar; wings below altogether paler; chocolate apical marginal 
patch more restricted, subapical area whitish ; outer central line of 
secondaries almost obsolete ; outer discal lines much more angular. 
Expanse of wings, ¢ 4 inches, 2 4 inches 5 lines. 
3 Q, Silhet (coll. F. Moore); @, Silhet (Stainsforth). B.M. 
This species was placed with T. dyras by Mr. Walker; and it is 
on one of our examples of this species that I found Dr. Boisduval’s 
MS. label; it is, however, evident (from the measurement given) 
that Mr. Walker did not make it the type of his description. 
45. TRIPTOGON ORIENS, 0. sp. 
3. Primaries same form as 7’. silhetensis, whity brown, clouded 
with greyish brown, transverse lines unusually straight, the wavy 
line very indistinct, apical margin broadly dusky ; secondaries nearly 
as in preceding species, rather paler; body greyer than in any of the 
preceding species: wings below as pale as in S. dyras, but the 
