TipuVidse from Ceylon. 59 



15-jointed ; bristles very similar to T. auripennis ; sliglitly 

 shorter than thorax. Thorax ochreous brown ( (J ) or dark 

 brown ( $ ), o£ the characteristic snbglobular shape. Leys 

 very long and thin, dark fuscous ; coxse ochreous in male ; 

 apical I of metatarsi white, the last four joints white, 

 tinged with reddish ochreous in the male ; metatarsi three 

 times as long as the remaining four joints together, those of 

 the front legs somewhat longer than those of the other two 

 pairs. Wings hyaline, with coppery reflections ; stigma dis- 

 tinct, about twice as long as broad ; cells round the apex 

 very short; the pnefurca springs from the first vein beyond 

 I of the wing's length ; auxiliary vein terminates at about §, 

 with the subcostal cross-vein at its tip ; marginal cross-vein 

 slightly beyond middle of stigma, at the tip of the first vein, 

 which tip being bent up to the costa, there is no super- 

 numerary cross-vein ; axillary terminates slightly beyond 

 tip of auxiliary. Hulteres very long (about equal in length 

 to the whole thorax), blackish, base of stalk in male ochreous. 

 Abdomen brown, njuch narrowed at base in both sexes ; 

 fleshy lobes of male genitalia unusually long. 



Length of body 9 mm.; wing 9 mm. Doleschall gives the 

 length as 2\"' , but indicates the correct length {41") in his 

 figure. 



In connection with the peculiar habits of a species of this 

 genus in the Seychelles Islands, noticed by Mr. Hugh Scott 

 in Trans. Linn. Soc. xiv. part 1, p. 32, it is interesting to 

 find a reference to the habits of T. saltens. Osten-Sacken 

 states that, according to Doleschall, "^ It is often found in 

 dwellings, principally in the corners, in large numbers, 

 dancing up and down in the air ; they keep so close together 

 that they seem to hold each other in dancing, and to form a 

 regular chain.'' In view of Scott's interesting discovery, 

 which he says required close and careful observation to find 

 out, i. e. that the Seychelles species hangs in chains from 

 fine web-threads, it seems possible that T. saltens uses cob- 

 webs in the corners of rooms for a similar purpose. 



Hab. Uva P. Madulsima, 25. v. 1908, 1 (J and 1 ? 

 ( T. Bainbriyye Fletcher) . 



2. Thrypticomyia longivena, sp. n., $ . 



Ochracea, alis hyalinis, tarsis pedum posticorum albis ; vena media- 

 stinali post ortu prasi'urcse in costa terminata. 



Head: antennce brownish, slightly longer than thorax; 

 14-jointed, last joint with the apical half narrower, so that it 

 has the appearance of being divided. Joints of flagellum 



