274 PROCEEDINGS OE THE NATIONAL MUSEUM. vol. r.j>. 



4. Head in front view not or barely wider than long, seen from above with tem- 



ples strongly rounded; eyes in male subparallel within, ocelli not espe- 

 cially large; wings stained with brown; thorax largely black with scutel- 



lum red fuscipennis, new species. 



Head in front view distinctly wider than long, seen from above ^^ith temples 

 weakly rounded and much narrowed; eyes in male convergent above, 

 ocelli verj'- large; wings hyaline; thorax largely red, or if black the scu- 

 tellum is also black 5. 



5. Black with prothorax rufous laticcps, new species, 



Thorax and abdomen largely red 6. 



6. Eye fully a third longer than wide; ocelli large, lateral ones in female closer 



together than their greatest diameter, in male touching the e3-es; malar 

 space barely half as long as basal width of mandible. . . occUutus, new species. 

 Eye barely a fourth longer than wide; ocelli smaller, lateral ones in female 

 removed from each other by their diameter, in male distinctly removed 

 from eyes; malar space much more than half as long as basal vvddth of 

 mandible 7. 



7. Clypeus broadly truncate; radius weakly curved at apex; base of third 



discoidal cell nearly as long as apical abscissa of discoideus (a larger 



species) agilis (Cresson). 



Clypeus broadly roimded at apex; radius strongly curved at apex; base 

 of third discoidal cell barely half as long as apical abscissa of discoideus (a 

 very small species) minutus, new species. 



8. Areola distinctly longer than broad, apical abscissa of subdiscoideus dis- 



tinct at base 9. 



Areola scarcely longer than broad; apical abscissa of subdiscoideus obso- 

 lete to base 10. 



9. Body entirely ferruginous, at most with the tergites blackish 



basally melleus, new species. 



Thorax at least partly black or piceous appalachianus Viereck. 



10. Hind coxae almost entirely black; wings clear hyaline; second discoidal 



cell strongly contracted at base coloradensis Brues. 



Hind coxae entirely ferruginous; wings tinged with yellow; second discoidal 



cell less strongly contracted at base pacifcus Cresson . 



AREOLOPRISTOMERUS, new subgenus. 



Dijffers from Pristomerus Curtis principally in tiie possession of 

 the areolet and the very narrow base of the second discoidal cell. 

 Type. — Pristomerus (Areolopristojnerus) smithi Cusliman. 



PRISTOMEUUS (AREOLOPRISTOMERUS) SMITHI, new species. 



Female. — Length, 8 mm.; antennae, 5 mm.; ovipositor, 2.5 mm. 



Head in front view much wider than long, in doi-sal view strongly 

 transverse, the temples nearl}^ flat and very narrow; face very nar- 

 row, two-thirds as wide as length of eye; eyes large, parallel within, 

 but slightly sinuate opposite antennae; malar space two-thii'ds as 

 long as basal width of mandible; diameter of lateral ocellus subecpal 

 to ocell-ocular line and sliglitly longer than postocellar line ; antennae 

 slightly below middle of eyes, first flagellar joint longer than second; 

 thorax mostly opaque shagreened with weak scattered punctures ; 

 pronotum polished laterally; mesopleural impression striate; scutel- 



