366 ME. W. WAREEN ON STEW GENERA AND [Apr. 18, 



Chaltbocltdon, gen. nov. 



Pore Agings broad ; costa nearly straight, convex only just before 

 apex, which is square ; hind margin almost imperceptibly crenu- 

 lated, bluntly elbowed in the middle; hind wings with hind margin 

 similar. Neuration : cell of both wings very short, not more than 

 i ; discocellular very obliquely curved inwards ; fore wings with 

 the 1st median nervule at |, 2nd close before, the 3rd at, the end ; 

 lower radial from | of the discocellular ; upper radial from end of 

 cell, 5 subcostals on a common stem, the 5th rising not far from 

 its base, the 4th running into the apex, 1st, 2nd, and 3rd close 

 together, one after the other. Hind wings with the costal ana- 

 stomosing with subcostal for -f of cell ; the two subcostals on a 

 short footstalk; radial from | of the discocellular; medians as 

 in fore wing. Scaling close and smooth, with faintly metallic 

 lines. 



Type, Chalyhoclydon marginata, sp. n. 



Chaltbocltdon marginata, sp. n. (Plate XXXII. fig. 16.) 



2 . Fore wings pinkish drab, with a slight olive tinge ; the base to 

 beyond the middle chocolate-brown ; across the centre of the wing 

 a vertical thick angulated chocolate-brown line, diffusely bordered 

 on either side with duller brown bands, the inner one expanding 

 on the costa, both thickly sprinkled with fine lustrous lilac scales ; 

 shortly before apex, a Y-shaped chocolate-brown line runs obliquely 

 to the bind margin at the elbow, then bends inwards nearly at 

 right angles to its former course to above the anal angle, then 

 vertical ; space between hind margin and this line, and lower i of 

 the apical wedge, dull brown speckled with lilac atoms ; apical | 

 lilac-grey ; space between central and outer line traversed by a 

 broad angulated fascia of lustrous lilac scales interspersed mth. a 

 few darker ones ; iringe-line chocolate-brown ; fringes ochreous 

 and fuscous mixed. Hiud wings with the basal half wholly lilac- 

 grey, containing a small black cell-spot, followed by 5 undulating 

 fasciae of the ground-colour, alternating with 4 lilac-grey fasciae of 

 exactly equal width ; a submarginal line running close to, but not 

 touching, the fringe-line, chocolate-brown ; base of fringes chocolate- 

 bi'own, but finer; space between the two lines lustrous lilac-grey. 

 Head, face, and fore pai'ts of thorax dark chocolate-brown ; rest of 

 thorax and abdomen ochreous drab. Underside silvery drab, with 

 dai'ker diffuse mottling and suffusion ; fore wiugs with one, hind 

 wings with two, distinct angulated brownish lines ; cell-spot of 

 hind wings distinct. 



Expanse of wings 36 millim. 



Hub. Sikkim ; Momeit, Burmah. 



[Seems a very scarce species in Sikkim, where it has only been 

 taken in the interior by Moller's collectors. There is a smaller 

 species of the same genus from the Karen Hills of Avhich I have 

 only one specimen. — H. J. E.^ 



