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Show 1875.] SPECIES OF SPHINGIDcE. 253 a greyish patch ; outer margin red-brown ; a black dot on lower discocellular, enclosed in a pale testaceous streak, which runs from within cell, just above the third median branch to outer discal bar : secondaries rosy brick-colour, costa testaceous, anal angle grey ; two pale postmedian brown streaks from anal angle to discoidal nervure, outer margin and an abbreviated lunulated discal streak dark brown, bordered within with pale rosy : thorax chocolate-brown, testaceous at the sides ; abdomen whity brown : wings below rosy, crossed by two parallel discal brown lines, outer margin dark brown ; primaries with an oblique line from apex to lower discoidal nervure, subapical area lilacine, base and inner margin testaceous: thorax below deep foxy red, especially the palpi and prothorax ; abdomen deep rose-red. Expanse of wings 3 inches 7 lines. Kunawur, N.W. Himalayas (Lang). Type, coll. F. Moore. This is a very pretty little species ; the larva, according to Capt. Lang, feeds on poplar. Genus TRIPTOGON, Bremer, Bull, de l'Acad. Imp. St. Petersb. iii. (1861). Allied to Metamimas ; primaries not angulated below apex ; all the wings regularly undulated from apex to external angle ; under surface of discoidal area of primaries densely scaled so as to obscure the discocellulars ; upper discocellular of secondaries rather longer than lower, conxex, lower oblique ; palpi short, obtuse ; antennae lono-, of male strongly pectinated. Type T. dissimilis, Bremer. 38. TRIPTOGON GIGAS, n. sp. Allied to T. sperchius, rather larger ; primaries above paler, excepting at centre of outer margin; a blackish discocellular spot; four transverse basal lines well defined : secondaries red-brown (as in T. dyras) ; anal angle paler, with two obliquely placed small brown spots : primaries below with central transverse lines less distinct ; secondaries whity brown, excepting at anal angle (which is tawny) three nearly equidistant red-brown lines. Expanse of wings 5 inches 5 lines. o* 2 > Silbet (Stainsforth). Type, B.M. 39. TRIPTOGON CRISTATA, n. sp. Wings and body above dull clay-brown, clouded with slaty grey ; primaries crossed by seven dark brown lines, the third and fourth (but especially the latter) well defined, oblique, and nearly straight ; the lines arranged much as in T. gigas, but the third and fourth nearer together; the spot near external angle olive-brown, not well defined ; a pale spot on lower discocellular vein : secondaries nearly uniform in colour, but rather darker towards apex, browner on abdominal area, and very slightly paler at anal angle, where there is also an olive-brown spot: body with a well-marked dark central longitudinal crest from the front of the head to near the end of abdomen ; antennae whity brown : wings below brighter-coloured than |