202 PERCY SLADEN TRUST EXPEDITION 



mounts of the genitalia of the two species). Specimens of L. umbrata from Singapore, 

 Taiping (Straits Settlements), and Mombasa (E. Africa), are in the British Museum 

 Collection. 



8. Limnobia magnicauda, sp. n. (Plate 10, fig. 6, wing; plate 11, fig. 5, $ genitalia.) 



Ochrea, infuscata, pleuris fusco-unilineatis, alis fuscis, immaculatis ; antennarum 

 articulis duplo longioribus quam latis. 



$%. Closely resembles L. mahensis in form and colour of body, but differs as follows: 

 Head : antennse in $ longer than head and thorax together, joints ovate, quite twice as 

 long as broad ; in ? shorter, joints shorter. Thorax : markings as in L. mahensis, but 

 indistinct. Legs : tips of femora not darker than the rest. Wings darker than in 

 L. mahensis, unspotted except for the stigma, which is situate on the marginal cross - 

 vein ; prtefurca not angulated, gently curved at the base. Halteres fuscous, base of stem 

 ochreous. Genitalia large, ochreous with black hooks. 



Length of body 5 mm. 

 ,, wing 5 mm. 



Loc. Seychelles. Mah^ : high forest of Morne Blanc and Pilot, 1 $ ; Morne 

 Seychellois, over 1500 ft., 1 $ ; Mare aux Cochons, 1500 ft., 2$, 1 ?; Cascade Estate, 

 800—1500 ft., 1 ^. 



9. Limnobia hidescens, sp. n. 



Infuscata, thorace flavo-signato, alis iridescentibus, lialteribus albis. 



$. Differs from L. magnicauda as follows: mesonotum in front of suture orange, 

 except for a central posterior fuscous spot, behind suture dark fuscous ; apices of femora 

 somewhat thicker and darker ; wings with brilliant purple reflections except at the tip, 

 which is coppery (these reflections can be seen though much less distinctly in L. magni- 

 cauda, but in that species are chiefly coppery, with very little purple) ; halteres entirely 

 translucent white. 



Length of body 4 mm. 

 ,, wing 5 mm. 



Loc. Seychelles. Mahe : Cascade Estate, 800—1500 ft., 1 ?. 



10. Limnobia thomasseti, sp. n. (Plate 10, fig. 7, wing; plate 11, fig. 6, $ genitalia.) 



Ochrea, pleuris ochreis, baud lineatis ; alis hyalinis, stigmate distincto, praefurca 

 arcuata, cellulfi, submarginali prsefurc^ duplo longiore. 



^?. Resembles L. magnicauda, but larger, more ochreous, and with the markings on 

 the back of the thorax more distinct ; no dark stripe on the pleurge. Head greyish, eyes 

 outlined with white. Joints of antennae ovate, but shorter than in L. magnicauda, 

 almost moniliform ; antennae in both sexes shorter tlian thorax. Legs testaceous, tips of 

 femora ochreous, preceded by a slightly darker ring. Wings hyaline, only faintly tinged 

 with fuscous, stigma distinct. Tip of mediastinal vein ending in costa just before the 

 level of the base of the submarginal cell ; praefurca strongly curved at base ; all the cells 



