TipuIicUe/rom Cei/Ion. 59 



15-joiutcd ; bristles very similar to T. auripcnnis ; slightly 

 shorter than thorax. Thorax ochreous browu {^) or dark 

 brown ( $ ), of the eharacteristic subglobular shape. Le(js 

 very long ami thin, dark fuscous ; coxie ochreous in male ; 

 apical 5 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 

 jiairs. IVinps hyaline, with coppery reHectious ; stigma dis- 

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

 very short; the pnefurca springs from the first vein beyond 

 1 of the wing's length ; auxiliary vein terminates at about f , 

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

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

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

 numerary eross-vein ; axillary terminates slightly beyond 

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

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

 Abdomen brown, much 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 2V" , but indicates the correct length [-M") 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. See. xiv. part 1, p. 32, it is interesiiug 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 S and 1 ? 

 ( T. Bainbrigge Fletcher) . 



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



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

 stinali post ortu prsefurcas in costa terminata. 



Head : antennas brownish, slightly longer than thorax ; 

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

 has the appearance of being divided. Joints of flagellum 



