220 P- CAMERON. 



Aneistrocerus cockerelli sp. nov. 



Black ; a longish triangular mark over the antennse, a line on the lower part 

 of the eye incision, a mark, longer than wide, of equal width, in the centre of 

 the apex of clypeus, the sides of it prolonged along the teeth, the apex there- 

 fore incised, a longish wide line on the upper part of the outer orbits, a broad 

 line, narrowed in the middle, on the base of thorax, tegula^, basal half of post- 

 scutellum, a triangular mark on the upper half of the sides of metanotum, an 

 oblique conical mark below the tegulje, a line on the apex of first abdominal 

 segment, broadly dilated laterally to the top of basal slope, an oblique conical 

 spot — the narrowed end on the innerside— on the sides of second segment, the 

 apex of the latter broadly, narrowed in the middle, narrow lines on the centre of 

 the second and third segments, and a line gradually narrowed inwardly, on the 

 sides of the second ventral segment, pale yellow. Wings iridescent, slightly 

 infuscated, the nervures and stigma black. 9- Length 5 mm. 



Clypeus as broad as long, the apex transverse in the middle, the sides forming 

 blunt teeth. Apex of mandibles rufous. Underside of flagellum brown. Base 

 of thorax not quite transverse, the middle being slightly dilated, the sides of the 

 apex bordered by a distinct keel, the upper part of the keel broadly rounded ; 

 except at the sides of the upper half, the apex is finely, closely transversely stri- 

 ated. There are two broad longitudinal furrows on the apical half of the meso- 

 notuni, a deeper one on the apical half of the scutelluni, which has, two ob-scure 

 yellow marks on the apex. The first and second abdominal segments are 

 strongly punctured at the apex, which is not reflexed, but slightly thickened; 

 the second is square. 



Ormsby County, Nevada ; July (Baker). A longish, narrowish 

 insect. 



Anvistrocerus bakerianns sp. nov. 



Black ; the clypeus, an irregular spot on the eye incision, an interrupted line, 

 gradually, obliquely dilated from the inner to the onterside, two irregular spots 

 on the apex of the scutelluni, a conical pleural spot, a line on the apex of the 

 first abdominal segment, roundly dilated in the middle, a line on the apex of the 

 second, broadly dilated backwards on the sides and continued along the outer- 

 edge of the ventral surface, and a line on the underside of the antenna! scape, 

 pale yellow; the legs black, the tibiae obscure yellow in front; the underside of 

 the flagellum, with the hook, reddish brown. Wings hyaline, the nervures and 

 stigma black. % . Length 4 mm. 



Clypeus distinctly wider than long, the apex with a broad roundly curved 

 incision. Base of thorax transverse, the sides not projecting. The sides of the 

 metathorax are roundly curved from the base to the apex. Upper half of nieta- 

 pleurse with strong, clearly separated punctures, the lower smooth. Second 

 abdominal segment as long as it is wide at the apex, which has a crenulated fur- 

 row in the middle. Antennal hook stout, reaching to the base of the eleventh 

 joint, which is distinctly longer than the tenth. The trophi are longer and 

 stouter than usual. 



Orrasby County, Nevada ; July. 



