PERICOMA. 



241 



themselves sickle-shaped, each bearing at the distal end, on the 

 dorsal surface, a pair ot' flattened, spatulate spinules ; the whole 

 joint covered with line hairs. Legs: femora and tibial grey, 

 with minute greyish white pubescence, a number of longer, white 

 bristly hairs (with black reflections in certain lights). These are 

 apparently irregularly placed on the fore legs and the femora, but 

 show a tendency to form longitudinal rows; those, at least, on 

 the hind tibiae are often arranged in three such longitudinal rows, 

 one pointing outwards, the other two posteriorly. The apical 

 part of the tibiae is narrowly but thickly clothed with jet-black 

 scaly bristles, and the extreme tip with a circlet of white scaly 

 bristles. The tarsi are thickly covered with jet-black scaly 

 bristles, the tips of the metatarsus and following joint bearing a 

 circlet of white scaly bristles; the metatarsus bears several very 

 strong black bristles, and the extreme tips of the tarsi have 

 minute cream-coloured scales. Wiwis dark grey, with all the 

 veins bearing a double row of spreading hairs, and without 

 scales. Upper fork of 2nd longitudinal vein bifurcates at two- 

 fifths of the wing, and the 4th longitudinal bifurcates between 

 one-fourth and one-third of the wing. A small spot, consisting 

 of numerous rather strong black hairs, at the tip of each vein, and 

 a similar spot at the bifurcations of the upper prong of the 2nd 

 longitudinal vein, and of the 4th vein, these two spots being 

 in a straight line with the last spot on the posterior margin ; the 

 first spot on the anterior border, the last one on the posterior 

 border, and the upper discal spot, are all generally larger and 

 darker than the others. Normally the spot at each wing-tip 

 consists of a black hair-spot, and a small white scale-spot, placed 

 very close together, the latter sometimes almost in the marginal 

 fringe. The hairs in some parts of the disc of the wing are 

 distfnctly darker and show a tendency to form black patches, 

 and along most of the veins are short rows and bunches, here 

 and there, of quite white, erect, short, bristly hairs, becoming 

 almost scale-like in the small tuft-like spots of them on the 

 margin of the wing, placed alternately with the black marginal 

 hair-spots. These give the border of the wing a strikingly 

 distinct, tesselated appearance composed of black and white spots 

 alternately. The costal fringe comprises some short sections 

 composed mainly of \\hite or whitish hairs, including generally 

 a section of some length just beyond the middle ; whilst the 

 wing-tip is ahvays clothed with white hairs for some distance, 

 there being also* some few short patches of white hairs in the 

 fringe of the posterior margin. Halteres rather large, cup-shaped, 

 with hairy upper edge, the stem being very narrow and short. 



Length l^-lf millim. 



Types in the Indian Museum. 



Var. bella, Bnin. 



5 . Body covered with dense, greyish white bristly hairs ; very 

 dense between the eyes and on the lower part of the face ; arranged 

 on the abdomen in "transverse rows at the base of each segment. 



