214 NOCTUID MOTHS 



5. Trachea isoscelata sp. n. 



cT 33 mm. 



Antenna with short cihation. Fore wing with down-turned 

 hair in the cell, nearly as in atrovirens, Hadena atrovirens, 

 Moore, Proc. Zool. Soc. Lond., 1867, p. 58, Sikkim, but 

 weaker in anterior half. In Cat. Lep. Phal., vii. Sir G. 

 Hampson ignores the presence of this hair in atrovirens and 

 some of the neighbouring species, implying its absence in his 

 keys. Abdomen clothed with rough hair and with slight 

 lateral tufts. 



Frons, body and legs predominantly buff or drab, with 

 some fuscous shading ; vertex of head and thorax deep olive- 

 green with fuscous scales intermixed. 



Fore wing above green suffused with fuscous-brown ; four 

 or five fuscous spots proximally and distally to the subbasal 

 line, followed before the hind margin by a large fuscous 

 patch ; the medial fuscous area somewhat blacker and more 

 distinctly triangular in shape than in atrovirens ; this point 

 differentiates isoscelata from all nearly-allied forms, the dark 

 patch forming an almost perfect isosceles triangle, of which 

 the antemedial line forms the base and the apex rests upon 

 the costa just before apex of wing ; this patch is only 

 indistinctly interrupted by the pale-outlined orbicular and 

 reniform and the anterior third of postmedial line, which 

 latter is double, oblique from costa to SC^, thence inwardly 

 oblique and waved ; subterminal line weakly dentate (more 

 strongly so on K\ M^ and M^), dark-outlined on each side 

 from SC^ to hind margin, where it is sharply bent outward 

 to tornus ; termen and middle of postmedial line pale bluish- 

 grey ; fringe ochraceous-buff , broadly shaded between the 

 veins with fuscous. Hind wing very pale buff at base, 

 broadly fuscous on distal half, the fringe bright buff. Under- 

 side predominantly fuscous, the fore wing more ochraceous at 

 termen, hind wing very pale buff on the proximal posterior 

 fourth of wing. 



Mt. Poi, 5200 feet— 1 cf . 



6. Trachea emphanes sp. n. 



cT 4 mm. 



Antenna with short fasciculate cilia. 



Body and wings predominantly whitish, with some pale 

 buff and tawny-brown shading; the veins streaked with 

 tawny and white. 



