244 iullktin: miskim of compahativk zoology. 



c" Black; front tibiae and tarsi brown, spurs brown; tips of mandibles 

 pale; wings uniformly light fmiiose, not darker on tips. Body slender; 

 face rather broad, nearly as broad below as above, clypeus truncate, lateral 

 ocelli much nearer to each other than to the eyes; posterior margin of the 

 pronotmn angulate, metanotum not strongly sericeous; abdomen broad, 

 sessile, first segment hardly one and a half times longer than broad at tip, 

 apical segment with short fine hairs, the inner spur of hind tibia a little more 

 than one half of the basitarsus; third submarginal cell nearly square, but a 

 little higher than long, and scarcely narrowed above, receiving the second 

 recurrent at middle, basal vein bowed, much before the transverse. 



Length 5 mm. 



Ageniella praestans Banks. 

 Calif.: !Muir Woods, 30 August, Claremont, June. 



Ageniella partita, sp. nov. 



Type — Cornell Univ. Coll. Paratijpc— M. C. Z. 10,405. 

 Calif.: Brawley, Imperial Co., 9 August (Bradley). 



cf Black, basal part of the abdomen mostly reddish or yellowish, apical 

 segment white above, scape beneath, narrow lower margin of clypeus, and the 

 tips of mandibles pale; legs mostly pale, front and mid .spurs white; wings 

 pale, darker on tips. Slender; face slightly narrowed below, silver}^ sericeous, 

 lateral ocelli rather nearer to eyes than to each other, hind border of pronotum 

 broadly arcuate, thorax silvery sericeous, especially pronotum, spot before 

 wings, scutellum, metanotum and two oblique stripes on the pleura. Abdomen 

 slender, basal segment about three times as long as broad at tip, broadly 

 margined below, with a dark stripe above. Front legs, and femora and tibiae 

 of the other pairs pale, the coxae may also be pale below; inner spur of hind 

 tibiae a little more than one half of the basitarsus. Marginal cell not its length 

 from the wing-tip, third submarginal cell much longer than high, narrowed 

 above, receiving the second recurrent vein near middle, basal vein is inter- 

 stitial with the transverse. 



Length 4.5 to 5 mm. 



A female from Sugar Pine, Madera Co., Calif, may belong here; 

 it is black with a red abdomen, black legs; but the general structure 

 is similar. 



