128 P. Cameron. 



Description of a New Species of Eumenes 

 from Panama. (Hym.) 



By P. Cameron. 



Eumenes centralis sp. nov. Q. 



Black, shining, the antennal tubercle, the lower inner 

 orbits narrowly, the outer from near the top more widely, 

 the antennal tubercle, underside of antennal scape, clypeus, 

 the greater part of the mandibles, a large, irregulär mark 

 on the lower apical half of the mesopleurae, a spot on the 

 base, the fore legs and the 4 hinder coxae, bright red ; 

 the underside of the flagellum of a darker red, the wings 

 black, largely tinged with violaceous, the hinder ai the 

 base behind almost hyaline. Length to end of 2 nd ab- 

 dominal segment 20 mm. 



Front and vertex strongly but not very closely punc- 

 tured, almost bare; the former with a narrow keel down 

 the middle; this keel is more strongly developed on the 

 tubercle. The upper half of the clypeus is strongly, irre- 

 gularly, but not closely punctured, the apical is sparsely 

 and much less strongly punctured; the apical incision is 

 shallow, the lobes broadly rounded. Pro- and mesothorax 

 closely, but not strongly punctured, the pleurae somewhat 

 more closely and strongly than the mesonotum; the latter 

 has on the apex 2 deep furrows. Pronotum quite trans- 

 verse, raised, the keel not projecting at the edges. Meta- 

 notum with a steep slope, its middle deeply depressed; 

 the sides rounded; the segment is densely covered with 

 long pale pubescence. Abdominal pétiole smooth and 

 shining; the basai third abruptly narrowed; at the apex it 

 is not, or hardly flattened; in the centre of the apex is 

 an elongated, deep fovea, narrowed at the apex; behind 

 it is a narrow indistinct longitudinal furrow; the apical 

 segments are sparsely punctured, pruinose. 



The antennae are stout, clearly thickened towards the 

 apex; the thorax about twice longer than the width at the 

 tegulae. The keels bordering the central apical half of the 

 clypeus are flat, indistinct. Mandibles long, the projecting 

 apical part half the length of the clypeus; the apex slightly 

 curved, rounded. Base of meso- and metapleurae smooth 

 and shining. The fore tarsi are thickly covered with 

 golden pubescence; the middle tibiae and tarsi and the 

 hind tibiae are more or less rufous in front. 



Agrées best with Saussure' s „Alpha" (Vespides, 

 l , 28 and lll, 1 28 and Syn. Amer. Wasps, 92) which does 

 not seem to be a very clearly defined group. E. Wag- 

 nerianus Sauss. is a close ally. 



