( 298 ) 



The long end-segment of the antenna is a very remarkable oliaracter, with 

 which we meet in this subfiimily only iu Protambidi/x and Oxi/amhuh/x. Kirhy pnt 

 this genns among his M'icroglossiruir. The species remind one indeed very much of 

 (j/iri'h'H, 



253. Cypa decolor. 



*Hmn-:niltus lUrohn- Walker, I.e. viii. p. 255. n. 19 (1850) (Hiodostaa ;— Mus. Oxford). 



(? ? . Tliere are two subspecies, which diiler in the outline of the forewing. 

 The Smerinthus decolor of Schanfuss, Nunq. Oti'os. p. 14 (1871), generally quoted 

 under the present species, is doubtless an 0.iyambid//x, most likely siihocellata ? , 

 wrongly identified by Kaden as the decolor of the B. M. (British Museum). 



S. Tenth tergite (PI. XXIV. f. an) suddenly narrowed beyond basal fourth, 

 slender, obtusely pointed ; uo sternite. Clasper (PI. XXXIII. f. 7) elongate, 

 triangular, ajie.x obtuse, almost truncate ; a dorso-basal flat process {pdb) ; harpe 

 with two jirocesses, one basal, slender, rod-like, clubbed, apex denticulated, the 

 other more distal, triangular, directed dorso-distal, reaching dorsal margin of clasper, 

 the dorsal part of the inner surface of the clasper proximally of this process convex, 

 below this convex part an oblique fold. Penis-sheath (PL XXX. f .32) armed at 

 end with a horizontal slender process, 



?. Eighth tergite (PI. XVII. f. lit) peculiar: mesially grooved, the groove 

 widened at the end of the plate, very narrow in proximal two-thirds, the edges of 

 the apical cavity irregularly and minutely notched ; proximally of this groove there 

 is a hole, most likely the orifice of a gland, the groove having the appearance of 

 serving as a channel for bringing the Huid of the supposed gland to the apical cavity. 

 Vaginal plate (PI. XVII. f. 9. 11) with the antevaginal part short, not strongly 

 chitinised ; postvaginal part a large triangular, rounded-truncate plate. 



Early stages not known. 



Hub. North India to Tenasserim and Ceylon ; New Guinea. 



a. C. decolor decolor. 



*Sii,friiilliu.t (leciilrir Walker, I.e. (Hindostan ;— Mus. Oxford). 



Mima.i decolor, Butler, Trau.^. Z<,i,l. Soc. Loud, ix, p. 583. n. 3 (1877) (Darjiling) ; Cot. & Swinh., 



Ciil. Moths Iml. i. p. 24. n. 131 (1887) (Darjiling ; Tavoy, this spec. V). 

 'Cijpa hicoiifirmm Butler, Illusfi: Ti/p. S^^echii. Lep. Ilet. B. M. v. 12. t. 80. f. 8. 9 (1881) (Darjiling;— 



Mus. Brit.) ; Cot. & Swinh., /.c. p. 13. n. 77 (1887) (Sikhim). 

 Ci/pa denilor, Moore, Jouni. Ax. Soc. Bengal Iv. 2. p. 97. n. 1 (1886) (Ponsokai, Siam) ; Swinh., 



Tram. EuL Soc. Luml. p. 164. n. 19 (1890) (Tavoy) : Kirby, Cat. Lep. Bet. i. p. 640. n. 2 



(1892) ; Hamps., in Blanf , Fauna Brit. Iml., Motlm i. p. 71. n. 94. fig. 43 (c?) (1892) (Sikhim; 



Tavoj) ; Swinh., Cat. Lep. lUl. ilus. Ox. i. p. 26. n. 101 (1892) ; Dudg., Journ. Bomhaij 



N. 11. Soc. xi. p. 407. n. 94 (1898) (Sikhim, 4500 ft., ix.). 



3 ? . Distal margin of forewing irregular, prominently lobed at R^. Vaginal 

 plate see PI. XVII. f. it. 



Hdb. North India to Shan States. 



In the Tring Museum 2 c?cj, 6 ? ? from Sikhim. 



b. C. decolor ferruginea. 



*C!/pa ferrufihieu WMer, I.e. xxxi. p. 42 (1864) (Ceylon ; —Mus. Brit.); Boisd., Spec. Ghi. Lip. 

 Hit. i. p. 53 (1875) (Ceylon) ; Butl., Trana. Zool. Soc. Loud. ix. p. 554 (1877) ; Moore, Lfp. 

 Ceylon ii. p. 8. t. 79. f . 3 ( ? ) ( 1882; ; Cot. & Swinh., I.e. p. 14. n. 78 (1887) (Ceylon) ; Kirby, 

 I.e. n. 1 (1892) ; Hamps., in Blanf., Fauiiit Brit. Iml., .Mothx i. p. 72. n. 95 (1892). 



