new Species of Diploptera. 109 



Clypeus almost as broad as long, narrower towards the 

 apex, on which are two short teeth ; pronotum truncate 

 anteriorly, the sides parallel, not widening posteriorly ; 

 scutellum not divided from postscutellum by suture ; median 

 segment truncate and depressed medially, the sides slightly 

 produced and rounded. First abdominal segment rounded 

 anteriorly, half as broad again as long ; second abdominal 

 segment at base as broad as first abdominal segment, but 

 slightly widening posteriorly. 



Head, thorax, and legs covered with a short testaceous 

 pubescence, longest on the rounded sides of median segment. 



Head and thorax rather coarsely punctured, abdomen 

 finely punctured. 



Length 12 mm. 



Hab. Solomon Islands (C. M. Woodford) ; 1 ? . 



Odynerus (Ancistroceroides) batesi, sp. n. 



Ochraceus, vertice nigro-maculato ; alis hyalinis, costa pallide 

 fusca, cellula cubitali secunda triangulari. 



$ . Pale ochraceous ; a conspicuous mark on the vertex 

 round the ocelli, strongly emarginate anteriorly, black. 

 Mandibles at apex and flagellum above fuscous. 



Wings clear hyaline, fuscous along the costa and in the 

 radial cell. 



Clypeus as broad as long, convex, and rounded at apex ; 

 mandibles stout, hardly dentate on the inner margin. 

 Ocelli placed in a triangle. A conspicuous transverse ridge 

 crosses the vertex immediately behind the ocelli. Pronotum 

 truncate at the anterior margin, the anterior angles forming 

 conspicuous angles ; scutellum and postscutellum divided 

 by a shallow transverse furrow; postscutellum truncate 

 posteriorly ; median segment truncate, with the truncation 

 concave, the lateral angles bluntly angular. Abdomen 

 elongate-ovate ; first segment broadly cup-shaped, its 

 posterior margin as broad as the second abdominal segment. 



Punctured : the mandibles and clypeus finely, head and 

 thorax coarsely ; disk of mesonotum with some longitudinal 

 striations. Covered with a greyish-white pubescence, which 

 is longer on the terminal segments of the abdomen. 



Length 7\ mm. 



Hab. Ega, Brazil (Bates) ; 2 ? . 



This species is of the same ground-colour as Odynerus 

 (Leionotus) chloroticus, Spin., from Egypt. 



