454 Mr. G. Meade- Waldo on 



Lahus gambiensis, sp. n. 



Niger; abdominis segmeiitorura 1, 2 margine postico flavis ; til)ii3 

 Havo variegatis, femoribus tarsisque ferrugineis ; alis hyaliuis, 

 cellula radiali apicaliter fusca. 



? . Black ; the scape beneath, minute spots in sinus of 

 eyes and behind them, two small marks on pronotum in 

 front, two small linear marks on the postscutellum, narrow 

 fasciae on the apical borders of abdominal tergite 1, and of 

 abdominal tergite and sternite 2, and the tibiae above, pale 

 yellow. 



Legs for the most part ferruginous. 



Wings clear hyaline, radial cell in the apical half, and 

 costal cell in the extreme apex, fuscous. 



Clypeus convex, subtriangular, as broad as long, the apex 

 slightly emarginate ; liead as broad as thorax ; pronotum 

 truncate anteriorly, gradually widening towards tegulse, 

 median segment rounded posteriorly, a depression on the 

 dorsal surface of the truncation. 



Petiole short, equal in length to disc of mesonotiim, 

 widening towards apex, the base armed with a spine ; abdo- 

 minal segment 2 elongate. 



Punctured ; head, thorax, and abdominal segment 1 

 coarsely, remaining segments of abdomen finely. 



The whole insect covered with grey pubescence, most 

 conspicuous on the clypeus and mesopleuree. 



Length 7 mm. 



Hab. Duniajoe, Cjiambia, 24. iv. 1911 {/. J. Simpson), and 

 S.W. shore of Lake Nvasa, between Fort Johnston and 

 Monkey Bay, 1650 ft., 25th Feb.-4th March, 1910 {S. A. 

 Neave) ; 2 ? . 



Presented by the Entomological Research Committee 

 (Tropical Africa). 



Synagris, Latr, 



Synagris jlavomacnlata, sp. n. 



Niger; scgmentis 3-5 abdominis utrinque flavo maculatis ; nlis 

 fusco-violaceis ; pedibus ferrugineis. 



cJ . Black; abdominal segments 3-5 with a subquadrate 

 spot on apical margin on each side, pale yellow. Mandibles, 

 clypeus, antennie, lower jtoition of postocellar region and 

 the legs, red-ferruginous. ^Vings brownish, a faint viok-t 

 effulgince in certain lights. Mandibles Gi mm. in length, 

 straight and sharp, inner margin finely serratiTorm, arnuMl 

 at tlic base with a conspicuous protuberance ; clypeus ralhcr 



