IÇ4 p - CAMERON. HYMENOPTERA. 



Eumenes Latr. 



1. Eumenes arcuatus F. 



Sabang, June, Lorentz River, December. 

 Apparently common. 



race dorycus, Maindron, Ann. Soc. Ent. Fr., 1882, 273; cf. Cameron, Tijd. v. Ent. XLIX, 227. 

 Bivak Island. January. 



2. Eumenes megalospilus sp. n. 



Bivak Island. January. 



Black, a line on the underside of the antennal scape, clypeus, a broad line from the 

 inner part to the lovver of the eye incision, of equal width, a large mark between the antennae, 

 extending above and below them, broadly roundly contracted laterally, transverse above and 

 below, a curved, not very broad line on the upper half of the outer orbits, the prothorax, 

 except the basai siope (which has a narrow yellow line round the top), almost the basai two- 

 thirds of the scutellum (the black apical line dilated in the middle), apical tvvo-thirds of the 

 post-scutellum, a large mark on 'the sides of the metanotum, wide above, gradually narrowed 

 below, its widest part a little wider than the black central stripe, which is of equal width, 

 a large conical mark (the narrowed end above) on the base of the mesopleurae, extending 

 from the top to the furrow, a smaller mark immediately below it, the base straight, oblique, 

 this apex roundly dilated above, obliquely sloped to a narrow point below, 2 marks on the 

 middle of the apex of the i st abdominal segment, dilated backwards and forwards on the 

 sides, the apical dilatation reaching the end of the segment, 2 large oblique irregularly 

 oval marks on the base of the 2 nd , the black central part between them, narrowed at the 

 apex, almost its apical third, a broad band, bilobate in the centre on the 3 rd , its sides 

 reaching to the base of the segment, the whole of the following, a triangular mark on the 

 sides of the 2 n( l ventral at the apex, the apical half of the 3"!, the black basai part trilobate, 

 the outer lobes wide, rounded, the central narrow, small, and the whole of the following pale 

 orange-yellow. The 2 anterior legs yellow, the coxae, trochanters and base of femora narrowly 

 black, the middle coxae, trochanters and basai two-thirds of the femora black, the black on 

 the latter followed by a rufous band, the apex yellow, the tibiae rufous, yellow behind, the 

 hind coxae, trochanters and femora black, the basai half of the hind tibiae and the apex 

 narrowly rufous, the rest yellow, the lower part rufous, broadly black in the middle, the 4 

 hinder tarsi black, the basai joint rufous. The antennal scape rufous, black above, the following 

 joints rufous, more or less black on the top, the others black, rufous below. Wings hyaline, 

 slightly tinged with fulvous, the radial cellule smoky in front, the stigma rufous, the nervures 

 black; basai two-thirds of tegulae black, the apex yellow. Abdominal pétiole longer than the 

 head and thorax united, and as long as the whole of the following segments. Clypeus about 

 one quarter longer than wide, its apex transverse. Mandibles dark rufous. Metanotal furrow 

 shallow, of equal width. 9- 



Length 18 mm. 



Head and thorax densely covered with white pubescence, which is longer and denser 

 on the post-scutellum and metanotum, closely punctured except the scutellum and metapleurae. 



