EDWARDS— DIPTERA, TIPULID^ 201 



Length of body 5 mm. 

 „ wing 5 "5 mm. 



,, rostrum 1"2 mm. 



Loc. Aldabra, 1 $. 



Genus LiMNOBiA Meigen, Syst. Beschr., i. 116 (1818). 

 {Limonia Meigen, Illiger's Mag., ii. 262, 1803.) 



6. Limnohia rhizosevia Speiser {Limonia), Wiss. Ergebnisse der Schwedischen Zool. 

 Exp. nach dem Kilimandjaro, ii. 10 (Diptera) 4, p. 48 (1909). 



Dr Speiser has kindly confirmed my determination of this species. The Seychelles 

 specimens differ from the type in the position of the dark band of the femora : typically 

 this is apical, but in all the Seychelles specimens it is just before the apex. In one of 

 Speiser 's specimens however this was the case, and he does not consider the difference to 

 be specific. 



Loc. Seychelles. From the mountain-forests. Mahe : Morne Blanc, 1 ? ; Foret 

 Noire, 1 $ ; Cascade Estate, 3 ^, 1 $ . Silhouette : Mont Pot-a-eau, 1 ^, 1 ? ; Plateau of 

 Mare aux Cochons, 1 $. Also East Africa, Kilimandjaro (Swedish Zool. Exp.). 



7. Limnohia mahensis, sp. n. (Plate 10, fig. 5, wing; plate 11, fig. 4, <? genitalia.) 



Ochrea, infuscata, pleuris fusco-unilineatis, alls subfuscis, fusco-maculatis ; anten- 

 narum articulis aequo longis ac latis. 



$^ . Head dark ; antenna alike in both sexes, hardly as long as thorax, dark 

 brownish, joints about as long as broad. Thorax rather bright brownish ochreous, with 

 a dark fuscous stripe along the pleurae ; a median stripe on mesonotum in front of suture, 

 2 spots behind suture and a spot on nietanotum darker brownish. Legs testaceous, tips 

 of femora somewhat darker. Wings light fuscous, darker fuscous spots at the base and 

 apex of the prsefurca and on the marginal cross-vein, otlier cross- veins infuscated. 

 Mediastinal vein reaching costa at the level of the middle of the prsefurca, subcostal cross- 

 vein at its tip ; prjefurca more or less distinctly angulated, sometimes emitting a vein- 

 stump towards the base of the wing ; tip of first longitudinal vein sharply bent up 

 towards the costa, nearly in a line with the marginal cross-vein ; subinargiual cell liardly 

 half as long again as the prsefurca. Ilalteres fuscous, base of stem ochreous. Abdomen 

 fuscous above, brownish ochreous below, genitalia dark brownish. 



Length of body 4*5 — 5'5 nun. 

 ,, wing 5'5 — 6'5 nnn. 



This species has a very Dicranomyia-Vike appearance. 



Loc. Seychelles. Mah^ : Mare aux Cochons, loOO ft., b$, 4$; Cascade Estate, 

 800—1500 ft., 3^, 3 ?. 



Dicranomyia umhrata Meij. (Tijd. v. Ent., 1911, p. 25) from Java is evidently a true 

 Limnohia, and very closely allied to L. mahensis, but the thorax is rather darker, tlie 

 angulation of the praifurca is imperceptible, and the genitalia differ (I liave compared 



26—2 



