454 Mr. G. Meade- Waldo oa 



Lahus gambiensis, sp. n. 



Niger; abdominis segmentorum 1, 2 margine postico flavis ; tlbiis 

 flavo 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 

 frontj two small linear marks on the postscutellum^ narrow 

 fascicC 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 feiTuginous. 



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 emargiuate ; head 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 mesonotum, 

 widening towards apex, the base armed w'ith 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. 



Hub. Duuiajoe, Gambia, 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 fiavomac}data, sp. n. 



Niger ; segmentis 3-5 abdominis utriuque flavo maculatis ; alis 

 i'usco-violaceis ; pedibus ferrugineis. 



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

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

 clypeus, antennae, lower poition of postocellar region and 

 the legs, red-ferruginous. Wings brownish, a faint violet 

 effulg( nee in certain lights. INlandibles 6^ mm. in length, 

 straight and sharp, inner margin finely serratiform, armed 

 at the base with a conspicuous protuberance ; clypeus rather 



