EDWARDS— DIPTERA, TIPULID^ 205 



obtusely angulated near its origin, with a short stump of a vein extending fronr the angle 

 towards the base of the wing ; marginal cross-vein near apex of first longitudinal, which is 

 distinct and gently curved into the costa ; great cross-vein opposite origin of prgefurca ; 

 third posterior cell very short, shorter than its petiole, contracted to a point at the base. 

 Halteres pale ochreous. 



Length of body 5 mm. 

 ,, wing 5 nun. 



Log. Aldabra, 1 ^ at light. 



Brunetti (Rec. Ind. Mus., vi. I'Jll, p. 280) desciibes a species of this genus from 

 Borneo. It is smaller than either of the two described here. 



Genus Thaumastoptera Mik, Verb. Z. B. Ges. Wien, xvi. 1866, p. 302. 



15. Thaumastoptera aldabrensis, sp. n. (Plate 10, fig. 10, wing.) 



Ochraceo-cinerea, pedibus testaceis, alis hyalinis, stigmate pallido ; apice venaj 

 auxiliaris post medium alae extensa, venula transversa magna parum retracta. 



$^. Head dark; antennae ochreous grey, as long as the thorax, joints of the 

 flagellum ovate, twice as long as broad, with three or four long stiff htiirs about their 

 middle ; palpi fuscous. Thoirix ochreous grey above, pleurre ochreous. Legs testaceous, 

 coxae ochreous. Wings hyaline, stigma distinct but pale ; mediastinal vein reaching costa 

 beyond middle of wing, at origin of prsefurca, subcostal cross-vein placed far before its 

 tip ; marginal cross-vein at apex of stigma ; second posterior cell nearly half as long again 

 as its peduncle ; great cross-vein carried back about ^ of the distance between the small 

 cross-vein and the origin of the prasfui'ca. Halteres pale greyish. Ahdoinen ochreous grey 

 in $, blackish in ?. 



Length of body 5 mm. 

 ,, wing 5 mm. 



The other (European) sjiecies is light yellow, with black tips to the femora. 

 Loc. Aldabra, 1 $ and 1 $ at light. 



Genus Teucholabis Osten-Sacken, Proc. Acad. Philad., 185'J, p. 222. 



16. Teucholabis fiavonotata, sp. n. (Plate 10, fig. 11, wing; plate 11, fig. 7, $ 

 genitalia. ) 



Fusca, thorace flavolineato, abdomine flavonotato, femoribus fusco-annulatis ; venulis 

 transversis infuscatis, magna et parva lineam rectam fere formantibus, venula transversa 

 marginali post apicem vena) longitudinalis primaj in costam Inserta. 



^?. Head dark ; proboscis about half as long as head ; basal joint of antennre large, 

 flattened, ochreous. Thorax dark brown above, plemv-e more chocolate-coloured ; a yellow 

 line at level of wing-insertion, continuous round front of mesonotum ; another along the 

 bases of the coxae ; a transvei'se raised yellow bar across the posterior end of the 

 metanotum. Legs testaceous, femora with a fuscous ring just before the ajjex, less 

 conspicuous on the front legs. Wings pale brownish, cross-veins strongly infuscated, two 



