332 AMERICAN HYMENOPTERA. 



Aiici^frocerus iiearcticns sp. nov. 



Black, the head, thorax, and, to a less extent, the base of abdomen densely 

 covered with long fuscous hair; the underside of antennal scape, clypeus, man- 

 dibles, except at apex, a small spot over antennae and at the eyes behind near the 

 top, a line on the base of thorax, widened behind, before the middle, the base and 

 sides of tegulae narrowly, the apex more broadly, a small irregular spot on the 

 sides of scutelJum at the apex, an irregular conical spot below the tegula*, and 

 not very broad, regular lines on the apices of the abdominal segments, pale 

 orange yellow; the legs are similarly colored, the four anterior with their coxae, 

 trochanters, femora and the greater part of the tibiae behind and the posterior 

 coxae, trochanters and femora entirely, black. Wings fuscous violaceous, the 

 nervures and stigma black. %. Total length 10 mm. 



Top and sides of metanotum bordered by stout keels, the centre by a thinner 

 one, the keels broadly rounded on either side above, their upper lateral part 

 stouter than the lower, the central keel thinner. Antennae stout, thicker towards 

 the apex, the underside of the flagellum except the last joint, brownish orange ; 

 the hook short, stout, conical, about twice longer than wide. Clypeus not much 

 longer than wide, sparsely, strongly punctured, the apex with a distinct, wider 

 than long, rounded incision. Thorax more than twice longer than wide, the base 

 transverse, the sides separated, but not projecting; apex of mesonotum with two 

 deep furrows. The 1st abdominal short, the base at the top bluntly rounded, 

 almost transverse ; it is sparsely, finely, distinctly punctured ; the 2nd very smooth 

 and shining, longer than wide, the apex flat. The metanotal areae are only 

 punctured round the edges. 



AVilmerding, Pa. Belongs to Saussure's Section 1, a., Syn. of 

 Am. Wasps, 160, near A. tigris Sauss. 



Ancistrocerus parvispinosus sp. nov. 



Black, the cl.rpeus, except for an irregular transverse mark, transverse above, 

 narrowed gradually to a point below, in the centre, the interior of the eye in- 

 cision, a small spot, longer than wide, narrowed below, over the antennae, a 

 longish line behind the eyes above, antennal scape except above, a line on the 

 base of thorax, laterally reaching close to the middle of pronotum, a large mark, 

 ronndly narrowed at the apex, below the tegulae, a small conical spot, transverse 

 at the base, rounded at apex, in the middle of apex of mesonotum, tegulae, post- 

 scutellum, the sides of metanotum broadly, the apices of the 1st and 2nd ab- 

 dominal segments broadly, of the 4th and 5th narrowly, an oblique line, not 

 quite so wide as the apical one, running from near the middle to united with its 

 outer edge, a large irregular, oval, transverse spot on the sides of the 2nd segment 

 at the base, orange-yellow; the apical third of the four anterior femora, of the 

 posterior narrowly and the tibiae and tarsi yellow, tinged with fulvous. Wings 

 iridescent, fuscous, the radial cellule violaceous; the stigma dark testaceous, the 

 nervures black. f . Length (total) 9 mm. 



Body longish and narrow, the parts of equal width, the base of thorax not 

 quite transverse, the sides blunt, the sides of the metanotum rough. Clypeus 

 pyriforni, as wide as long, the apex depressed, transverse. First abdominal seg- 

 ment longish, cup-shaped, the apex slightly raised ; the 2iid clearly longer than 

 wide, its apex strongly reflexed, more strongly punctured than the rest. The 



