294 iiPULiDvi:. 



at one-third of the wiug's length ; the second large spot touches 

 the tip of the 1st longitudinal vein, enclosing the anterior cross- 

 vein and the discal cell and posterior cross-vein. Between these 

 two larger spots a smaller round one over the base of the 2nd 

 longitudinal vein, as in P. hcta, and a similar round spot on hind 

 margin of wing over tip of 6th longitudinal vein, "S'ery small 

 spots and streaks are liable to occur in various parts of the wing, 

 especially at the extreme tip, the tips of the 4th and 5th veins, 

 and so on. Sometimes a yellow spot near, but not at, the base of 

 the wing, and connected with the proximal large spot on the 

 costa. Halteres relatively small, brownish yellow. 



LemjtJi 6 9-14, $ 14-15 millim. 



Eedescribed from several examples of both sexes in the Indian 

 Museum and my own collection, all from Ceylon, where it appears 

 to be a common species especially in May, June and July, small 

 parties of them being seen flying together over the roadways and 

 under branches of trees. The Indian Museum dates range from 

 29. V. to 18. ix., but it probably occurs in Ceylon all through the 

 summer. Mr. Gravely has taken it at Peradeniya " at light." 



Type (a female) in the British Museum, from Ceylon. 



The male is much less common than the female and I believe 

 has not been described, but it is present in the Indian Museum 

 and shows no peculiarities beyond the ordinary sexual differences. 



198. Pselliophora immaculipennis, Bnm. (PI. VI, figs. 7, 8.) 



Pselliophora immaculijiejinis, P.runetti, Kec. Ind. Mus. vi, p. 243 

 (1911). 



2 . Head bright shining orange-yellow, with scattered hairs ; 

 a frontal spot, almost bisected in the middle (just above the 

 antennae), shining light yello\\ -brown, extending from eye to 

 eye. Eyes small, black, and placed well forward so that the 

 back of the head is very \\ ide, and joins the equally broad vertex 

 which is orange-yellow. Pace rather considerably covered with 

 long yellow hairs. Antennae concolorous, covered with microscopical 

 silver-grey dust : the 1st joint long, cylindrical, 2nd short, bead- 

 like, 3rd and rest cylindrical ; 3rcl as long as 1st, remainder 

 •Gradually shortening, the last three very short and close together,, 

 the I3t'h style-like. Palpi orange-yellow, tip black. Thorax 

 concolorous, with irregularly scattered hairs, shining, bare. The 

 prothorax reduced to a small circular thick disc, bright yellow ; 

 humeri brown. Mesothorax with three wide, shining, light brown 

 stripes, tapering behind, the 1st central and attaining the anterior 

 margin, the stripe on each side reaching the shoulders and 

 terminating above the mesopleurse. Behind the middle transverse 

 suture the dorsum widens out until the posterior corners form 

 sharp angles. This posterior portion bears a wide brown stripe 

 on each side, divided by a small longitudinal suture ; the stripes 

 beginning behind the ends of the two dorsal side stripes which 

 fire in front, and extending backwards to the small scutellum. 



