336 EUCTENLTR AFTER YX; TRISTROPHIS; THINOPTERYX. By L. B. Protjt. 



64. Genus: Eiictemirapteryx Warr. 



Characters of Ourapteryx but with the ^ antenna bipectinate, the wings more strongly built, more 

 thickly scaled, the 1st and 2rd subcostals of the forewing long-stalked, never coincident, the tail at the 

 3rd radial of the hindwing quite short, sometimes not longer than that at the 1st radial. The early stages were 

 described in 1910 by Nagako, but in Japanese. Only a few species are known. Energopteryx Th.-Mieg is a 

 synonym. 



macidicau- E. itiaculicaudaria Motsch. (= luteiceps Feld.) (17 d) is distinguished by the not very prominent tail 



daria. ^^ ^j^g jg^ radial and by the brown or browii-grey lines and fringes. — ab. fumosa ah. oiov. is uniform 

 smokecolour instead of white, the lines traceable in yellow-brown, spots on hindwing normal. — Japan and 

 Chekiang. 



nigrociliaria. E. tligrociliaria Leech (17 e). Very much larger, the markings thicker, blackish, hindwing with a cell- 



mark; fringes black. Tail at 1st radial of hindwing much more pronounced, the margin being somewhat cut 

 away anteriorly to it. W. China. 



parallelaria. E. parallelaria Leech. (17 a) Shape and coloration of nigrociliaria, scarcely larger than maculicau- 



daria, cell of forewing longer, postmedian line placed much nearer to the cell-mark than in the other two species 

 parallel with antemedian, the line of the hindmng slender, sinuous, passing proximally to the cell-spot, which 

 is quite small. Chang Yang. 



jesoensis. E. jesoensis Matsumura is unknown to me, possibly only a form of maculicaudaria, but smaller, the 



tail of the hindwing short, simple (i. e. the anterior projection wantuig), the groiind-colour perhaps less clear 

 white, the postmedian line of the forewing and the single line of the hindwing almost parallel mth the distal 

 margin. Japan : Yeso ? (the entire description is in Japanese). 



horishana. E. (?) horishana Matsumura is also unknown to me. The figure (unfortunately $) resembles maculi- 



caudaria but is rather smaller, the lines thicker, the antemedian rather sinuous, becoming oblique posteriorly, 

 that of the hindwing straight, nearer the base, directed towards the distal margin (not towards anal angle), 

 becoming obsolete near it at the fold. Japan (?). 



65. Genus: Tristropliis Btlr. 



Neuration of Euctenurapteryx, antennal structure and general habitus of Ourapteryx, rather narrower 

 winged, tail of hindwing slight. Face smooth. A genus of only a few E. Asiatic species, probably belonging 

 with Myrteta rather than with Ourapteryx, with which it has hitherto been associated. 



veneris. T. veneris .B^?)'. (17 f, g). Recognizable by the extremely oblique first band, the presence of a submar- 



ginal band (constricted at the veins) on the forewing, and the bright ochreous submarginal band of the hind- 



venerata. wing. — In ab. venerata Th.-Mieg the cell-mark posteriorly touches the 2nd band. — ab. unistriga Warr. 



unistriga. lacks the first two bands of the foremng, though a dot at the costa and one on the median vein indicate the 



antemedian. Japan: Yokohama, Nikko etc., common. 



siihpuncta- T. subputictaria Leech (= obtusicauda Warr., subcurvaria Ob.) (I7 f ) combines the structure of Tri- 



''"*' strophis with the superficial appearance of Ourapteryx, though the lines of the hindwing distinguish it from 



oberthueri. the latter. Japan. — oberthueri nwn. nov. (= subpunctaria Oh. nee Leech) is larger, apparently broader, the 



hindwing with a distinct discal mark, less strongly bent postmedian line, no subterminal, the anterior spot 



more mixed with red. Mou-pin. Unknown to me, probably a distinct species, possibly a form of the following. 



siaolouaria. T. (?) siaolouaria Oh. differs from oherthueri in the obsolescence of the lines, only a slight, broken 



antemedian line on the forewing remaining; cell-marks also reduced. Siao-lou, W. China. 



66. Genus: Tliiiioi>teryx Btlr. 



Face prominent, shortly rough-scaled. Palpus moderate. Antenna in ^ -with fascicles of cilia. Neu- 

 ration of the two preceding genera. Hindwing with a slight tail at the 2nd subcostal, a longer one at the 3rd 

 radial. Indo-Malayan Region to Japan. AU the species (or forms) are very closely related. 



crocoptera. T. crocoptera Koll. (17 f). Bright yellow, with red-orange striation, which is partly confluent into 



maculosa, patches. Forewing with subterminal line fine, marked with dark dots on the folds. — ab. maculosa nom. 

 nov. (= var. B. Guen.) has dark blotches in the middle of both wings (largest on the hind^ving) distally to 

 nehulosa. the cell. — ab. nebulosa Btlr. has both mngs above and beneatli, excepting the marginal area, almost 

 striolata. entirely suffused with violet-grey. — striolata Btlr., from Japan, is densely irrorated with dark striae. Inter- 

 mediates also occur. — crocoptera is distributed in Japan, Korea, China and N. India. 



