212 p. CAMKRON. 



Legs black, the apex of the four anterior femora, all the tibiae except at the apex 

 yellow, the anterior tarsi rufous, or tinged with rufous. Wings hyaline, the 

 radial cellule fuscons-violaceous, the stigma and nervures black. ?. Total 

 length 7 mm. 



Clypeus as long as wide, aciculated, with clearly separated, longish punctures; 

 •the apex projecting, smooth, shining, depressed, not quite transverse. Front and 

 vertex closely, rugosely punctured. Base of thorax transverse, the angles not 

 projecting. Apex of postscutellum broadly, roundly narrowed, the yellow part 

 almost transverse. Metanotum irregularly reticulated above; the centre acicu- 

 lated-striated, the sides narrowly rounded. Metapleurse strongly aciculated- 

 striated, the rest strongly punctured. Basal slope of first abdominal segment 

 aciculated, weakly, sparsely punctured, the rest strongly punctured; the apex 

 not reflexed. The second segment is closely, finely punctured, more strongly 

 towards the apex, which is not reflexed. Tegulse yellow, a fuscous spot at the 

 base. 



Ormsby Co., Nevada, July 6th. 



Allied to pedestris Sau.ss. It is smaller, has the yellow much 

 brighter, more lemon in tint, the thorax shorter compared with the 

 width, as is also the second abdominal segment; the yellow marks 

 on the metanotum are much larger and the apex of tibiae and tarsi 

 are black, not yellow. 



Aiicistrocerus pedeslris Sauss. 

 A male from Fedor, Texas. It is nearly related to ventones Cam., 

 described in this paper ; it may be known by the apex of femora, 

 tibiae and tarsi being yellow, by the clypeus being much more 

 strongly punctured, by the line on the first abdominal segment not 

 being so strongly dilated laterally, by the mark on the second seg- 

 ment being nearer the base, and by the second segment being longer 

 compared with the width — in ventones it is not much longer than 

 wide, in pedestris very clearly longer than it is wide at the apex — and 

 the sides of the pronotum are not spinose as in ventones. In the I 

 of what I regard as pedestris, there is a small yellow mark on the 

 sides of the metanotum at the base, and the yellow on the lower 

 edges of the latter is obscure. In a specimen (%) from Lee Co., 

 Texas, the lateral metanotal spots are absent; on the other hand, 

 there are two small yellow spots on the lower surface of the second 

 abdominal segment. In both the apex of the second segment is 



strongly reflexed. 



The group of anormis Sauss. 



Small species, the yellow pale, the yellow line on the first abdomi- 

 nal segment usually dilated laterally, the second .segment with an 

 enclosed yellow spot. 



