224 p. QAMERON. 



orange-yellow; the apex of tJie femora, the tibise and the tarsi yellow, tinged 

 with fulvous. Wings hyaline, the radial cellule smoky, the stigma dark fulvous, 

 the nervures blackish. 9- Length to end of second abdominal segment 8 mm. 

 Hinder coxse with a distinct, triangular tooth in the centre above. Clypeus 

 strongly but not closely punctured, its apex depressed, almost transverse; it is as 

 long as its greatest width, rounded above. Front and vertex closely almost 

 rugosely punctured. Temples wide. Base of thorax transverse, its sides rounded. 

 Mesonotum without basal furrows. Postscutellum prominent, rugosely punc- 

 tured, except on the apex. Metanotum roundly depressed, the top in the centre 

 with stout strise, the sides rugosely punctured ; a keel runs down the centre; on 

 the sides at the apex are two yellow, prominent, diverging spines united at the 

 bas^ The first abdominal segment has a distinct petiole at the base, the apical 

 slope is triangular; smooth, above bordered by an irregular rugose band; the 

 rest of the segment is strongly, closely punctured, the apex is more strongly 

 punctured, it is slightly raised and smooth ; the second is clearly longer than 

 wide, narrowed slightly at the base; the punctuation becomes stronger towards 

 the apex, the punctures there being wide, deep; the extreme apex is curled up. 



Fedor, Texas ; May. 



Belongs to Stenancistrocerus. Characteristic is the distinct tooth 

 on tlie hinder coxse. It has the abdomen formed as in Nortonia, 

 but I find so much variation in the structure of the first abdominal 

 segment — it varying from sessile to pedunculate — that I doubt if 

 the form of the basal segment can be used generically. 



Nortonia ? basimaciila sp. nov. 



Black ; the basal slope of first abdominal segment red, the led broadly dilated 

 laterally, the apex of clypeus red, a bioad curved band on top of clypeus, a small 

 irregular mark above the antennae and at the end of the eye incision, an elonga- 

 ted conical spot on the outer orbits near the top, a broad mark not quite reaching 

 to the middle, on the sides of the pronotum at the l)ase, postscutellum, a small 

 irregular mark on the sides of the apical slope of metanotum, a band, broadly 

 dilated in the middle, on the apex of the first abdominal segment, a large, irreg- 

 ular spot on the sides of the second near the base, a broad band of equal widtli 

 on its apex, the band extending more narrowly on to the ventral surface to near 

 the middle, where it is much narrowed, and a large, oblique, somewhat oval 

 spot on the pleurae below the teguite, orange-yellow; antennal scape yellow, 

 tinged with red, the apex black above. Legs bright fulvous red, the coxae black, 

 the tibia; at the base tinged with yellow. Wings almost hyaline, largely suf- 

 fused in front with fuscous violaceous, the stigma dark fulvous, the nervures 

 black. Tegulse yellow, tinged with fulvous, darker in the centre. 9- Length 

 8 mm. 



Clypeus pyrifurm, strongly but not closely punctured, its ajiex almost trans- 

 verse. Mandibles red, black at the base, with a white spot in the middle. Front 

 and vertex strongly, irregularly, but not very closely punctured. Temples 

 broad, rounded, its occiput almost transverse, distinctly keeled. Thorax more 

 than twice longer than wide, transverse at the base, the sides not projecting ; 

 above it is strongly, closely punctured, except on the centre of metanotum, where 



