090 JOURNAL, BOMBAY NATURAL HIST. SOCIETY, Vol. XXVIL 



Abdomen cylindrical, a little tumid at the base, the border of 7 to 9 a little 

 dilated. Glossy black with a dorsal spot of j^ellow on the 1st segment, a longi- 

 tudinal, tapered spot on the dorsum of 2nd, continued very finely on the 3rd, 

 the sides of 1 to 3 are also yellow, as is also, finely, that of the 7th 10th segment 

 very short, flexed on the 9th, with its articulation gaping widely above and a 

 pale brown in colour. On its dorsum, is a similar pyramidal protuberance to 

 that seen in optata, but its point is turned slightly back in the direction of the 

 base of abdomen. 



Anal appendages black, as long as the 9th and 10th abdominal segments taken 

 together, superior subcylindrical, thickened at the base, very tapered afterward, 

 ending in a blunt point, abruptly bent downward. The inferior nearly as long, 

 seen in profile, it resembles the superior, slightly curved throughout its length 

 but more strongly so, apically, coated with short, yellow hairs. From above, 

 the base is broad, tapering afterwards to a point, which has a short, rounded 

 bosse just before it. 



Legs slender, femora black, trochanters, tibise and spots on the tarsi yellow. 



Female closely resembles the male but the wngs are a little enfumed and more 

 saffronated at the base. The labrum is not bordered with black ; the yellow, 

 antehumeral marking is absent but in this part of thorax, the area is pale brown 

 as far out as the humeral suture. 



Abdomen slenderer, compressed laterally, black. (In the Singapore type 

 specimen, the dorsal line on the first two segments is absent), the lateral 

 borders of segments 1 to 8 are finely yellow but broader on the first 2. The 

 8th and 9th segments very short. Vulvar scale black, very short, rounded, 

 projecting and spout-like. 



Anal appendages small, subcyhndrical, thick, separated by a small, rounded 

 protuberance which terminates the abdomen. 



Legs black, femora pale blackish brown. 



Hab. Karen Mts., Upper Burma. Female type from Singapore, collected 

 by Mr. Alfred Wallace ; male type collected by Mr. Fea 19th June and a paratype 

 female on the 19th April, now in the Selysian collection. 



13. Idionyx corona, sp. nov. M.S., Memoirs of Pusa. 



A single female from the Babaruddin Hills, Mysore , 4,700', 1-6-1916, coll. 

 Ramakrishna. 



Abd. 22 mm. Hindwing 38 mm. (The last 5 segments of the abdomen are 

 missing, the probable length of the whole would be about 40 mm.). 



Head : eyes large and globular, probably deep sea blue in life, now reddish 

 brown, moderately fused. Occiput small, black with a tuft of stiff, black hairs 

 in the middle line and fringed behind with long, yellow hairs, this fringe being 

 continuous round the posterior margin of the eyes. Vesicle remarkably deve- 

 loped into a long, elevated spine shaped like the double crown of ancient Upper 

 and Lower Egypt and 2'75 mm. in length, bluish black. Frons with a deep 

 fissure, bronzed green or bluish green above and in front ; epistome black ; 

 labium yellowish at the base, broadly blackish brown along the border as is also 

 the labrum. 



Thorax bronzed green marked by a narrow, bright yellow, lateral stripe 

 which traverses the spiracle. The posterior border of the metepimeron bright 

 yeUow. Above blackish brown, unmarked. 



Wings enfumed diJBfusely around the areolar network, the centres of the cells 

 being clear. A diffuse saffronation along the costa as far as the stigma and most 

 markedly at the base. Membrane white tinged with brown posteriorly. Stigma 

 black, unbraced, not quite 3 mm. 



A single row of discoidal cells nearly as far as the node. Hypertrigone tra- 

 versed once in the f orewing, entire in the hind. Arc at the 2nd antenodal nervure. 

 Loop 11 cells. Only 2 rows of cells posterior to Cui 



