AMERICAN HYMENOPTERA. 261 



stoutly punctured ; on the back the punctures run into reticulations and they 

 become weaker towards the apex; tiie apex in the middle transverse, the sides 

 forming stout teeth, which are twice longer than wide. 



Hab. — Mexico. 



Urogasler albinervis sp. nov. 

 Black, the apex of the 4 front femora broadly, their tibia?, and tarsi, the base 

 of the hind tibise and the apical 4 joints of the hind tarsi testaceous; the wings 

 very clear hyaline, iridescent ; the costa and borders of the stigma testaceous, the 

 other nervures milk-white, almost transparent. Head and thorax opaque, the 

 mesonotuni closely, minutely punctured, the scutelhim more shining, almost im- 

 punctate; the basal depression with some striae; its sides bordered by a distinct 

 transversely striated furrow; the apex smooth and with a distinct fovea; the 

 part outside the furrow is smooth and shining and bordered at the base by stria- 

 ted furrow. The postscutellum is comparatively large, striated, depressed, bor- 

 dered by a stout keel which is rounded behind. In the centre of the metanotum 

 is a large area which is angularly dilated in the middle and is irregularly rugose ; 

 the sides are keeled ; the lateral parts stoutly aciculated ; the centre of the mid- 

 dle area is aciculated. Tegnlse. dark testaceous. The body and legs are covered 

 with a minute pale pile. Length 2 mm. 



Hah. — Mexico. 



Cheloiiiis clavinervis sp. nov. 



Black ; the apical three-fourths of the fore femora, the apex of the 4 posterior 

 and the tibise and tarsi rufo-testaceous; the baseof the abdomen with a large 

 mark, about 3 times longer than wide on the sides, with a smaller mark, half its 

 width, attached to its outer side, of a whitish testaceous color; wings hyaline, 

 the apex smoky, the nervures and stigma black. 9 • Length 4 mm. 



Clypeus margined laterally, smooth and shining; its basal depression with 

 some stout keels. In the centre of the base of the metanotum are 2 twisted keels, 

 with a broken one. stout at the base, in the centre; on the sides are some irregu- 

 lar keels; the apical slope is stoutly, irregularly longitudinally striated. Pro- 

 pleurse coarsely rugose; the mesopleurfe strongly punctured, the punctures run- 

 ning into reticulations; the metapleurse coarsely closely rugose-reticulated. Ab- 

 domen closely punctured, reticulated, the base much more strongly than the rest 

 and irregularly striated. The base of the radius is thickened ; the apex of the 

 transverse basal nervure is clavate, black, the rest of it and the basal 2 nervures 

 are testaceous, the other nervures black. 



Hah. — Mexico. 



Kuplioriella testaceipes sp. nov. 



Dark rufous, the flagellum of antenuai black, the legs yellowish testaceous; 

 wings hyaline, the nervures and stigma dark testaceous. 9 • Length 2 mm. 



Antennae at least 15-jointed, longer than the body, almost bare, the joints 

 greatly lengthened. Smooth, shining, almost bare; the parapsidal furrows deep, 

 distinct on the basal half of mesonotum. A distinct transverse furrow at the 

 base of the scutellum. Ovipositor projecting, about one-third of the length of 

 the abdomen. Pterostigma large, elongate. Radius obsolete. Basal nervure 



TRANS. AM. ENT. SOC. XXX. SEPTEMBER. 1904. 



