151 



ON SOME NEOTKOPICAL VESPIDiE. 

 By p. Camekon. 



Eumenes henricus, sp. nov. 



Black, the head and thorax densely covered with pale pubescence, 

 which, on the vertex and mesonotum, has a fulvous tint; a mark 

 between the antennae, its upper part distinctly narrower than the 

 lower, a line on the sides of the upper half of the clypeus, a short 

 narrow line on the top of outer orbits, yellow ; the apices of the basal 

 two abdominal segments narrowly, of the others broadly rufous (pro- 

 bably discoloured) ; the inner apical half of the mandibles and the fore 

 tibife in front obscure rufous (perhaps a discoloured yellow). Wings 

 fuscous violaceous. Female. Length to end of second abdominal seg- 

 ment, 13 mm. 



Panama. Belongs to the Division Alpha, h (Syn. Am. 

 Wasps, 92). 



Clypeus smooth, impuuctate below, the upper part sparsely, weakly 

 punctured ; the rest of the head, thorax, and second segment of abdo- 

 men closely and strongly punctured. Clypeus widened below, its apex 

 with a shallow rounded incision in the middle. Thorax short, broad, 

 the sides rounded in front ; the sides of the metanotum broadly 

 rounded ; the depression is on the apical half only ; it is narrow at tlie 

 base, becoming gradually widened towards the apex. Abdominal 

 petiole long, distinctly longer than the head and thorax united, but 

 not quite so long as the rest of the abdomen ; its basal third slightly 

 narrowed, sparsely punctured and shining at the apex, the rest more 

 strongly and closely punctured ; close to the apex, m the middle, is a 

 shallow transverse not very distinct furrow, which becomes transversely 

 widened and deepened at the apex ; the apex has a raised border ; the 

 second segment is elongated pyriform, almost twice longer than the 

 width at the apex; the base is clearly narrowed, becoming gradually 

 wider towards the apex, which is smooth and slightly raised; the 

 petiole is not much depressed above ; the apex, looked at especially 

 from the sides, is seen to be transversely furrowed. 



The thorax is clearly longer than wide ; it has no longitudinal 

 furrows. The species looks like a small form of E. centralis, 

 Cam. ; apart from the latter having the clypeus, base of legs, 

 and pleurae marked with rufous, it may be known by the much 

 less strongly punctured head and thorax, by the metanotum 

 being furrowed throughout, and by the abdomen being perfectly 

 smooth. 



Polybia tajpajosensis, sp. nov. 

 Black, tinged with brown ; the legs and abdomen rufous brown ; 

 the apex of the first abdominal segment narrowly yellow; wings fuscous 

 violaceous, the nervures and stigma black. Prothorax without lateral 

 angles. Female. Length to end of second abdominal segment, 

 13 mm, 



Eio Tapajos, Amazons (Prof. J. W. H. Trail). 



