ICHNEUMON-FLIES OF AMERICA: 1. METOPIINAE 173 



Notaulus a pit which is either circular or somewhat elongate at right angles 

 to edge of mesoscutum; combined areola and basal area of propodeum 1.9 

 to 2.3 as long as wide; metapleurum with many discal hairs, semirufus 

 subgroup 7 



7. Abdomen entirely black; second and third segments of hind tarsus pale 



fulvous, brownish apically 7. bryanti, new species 



Abdomen partly or almost entirely ferruginous, second and third segments of 

 hind tarsus dark brown 8 



8. Coxae fulvous, or rarely black; median flagellar segments of male about 1.15 



as long as wide, of female about 1.1 as long as wide. 



8. semirufus Cresson 



Coxae black; median flagellar segments of male about 1.0 as long as wide, of 



female about 0.88 as long as wide 9. elimatus, new species 



9. Notaulus a subcircular pit, from which a short depression leads backwards 



(the depression strong in male, subobsolete in female); hind femur about 



2.3 as long as deep in male, 1.6 to 2.1 as long as deep in female; front wing 



3.4 to 5.0 mm. long; hind tibia fulvous, usually somewhat infuscate at base 

 and apex (fig. 192,d) 13. washingtonensis (Davis) 



Notaulus a short sharp groove, deep anteriorly, quickly fading out posteriorly; 

 hind femur about 2.5 to 2.6 as long as deep; front wing 4.5 to 5.5 mm. long; 

 hind tibia uniformly fulvous 10 



10. Coxae and first trochanters fulvous; front spur of hind tibia about 0.84 as 



long as depth of its tibia; temple shorter, in profile about 0.80 as long as 

 eye in male, about 0.85 as long as eye in female . . . 11. litus, new species 

 Coxae and first trochanters blackish; front spur of hind tibia about 0.67 as 

 long as depth of its tibia; temple longer, in profile about 1.4 as long as eye in 

 male, about 1.2 as long as eye in female ... 12. pullatus, new species 



11. Occipital carina complete dorsally 12 



Occipital carina absent dorsally, or if partially present dorsally it is incomplete 



medially 14 



12. Interantennal process of face not unusually prolonged, its point not close to 



frons; notaulus present as a shallow pit; front wing 3.4 to 4.3 mm. long. 



stenostoma group 1. stenostoma, new species 



Interantennal process of face prolonged as an attenuate point that comes 

 close to frons or actually touches frons; notaulus absent; front wing 4.5 

 to 6.3 mm. long, mitratus group 13 



13. Apex of interantennal process not touching frons, separated from it by a 



distinct gap; hind femur fulvous 2. mitratus Gravenhorst 



Apex of interantennal process touching and fused with frons; hind femur 

 blackish 3. turgidus Holmgren 



14. Median half of clypeal margin strongly convex or weakly angled medially 



(fig. 179, o) ; mandible of female with a strong subbasal transverse groove, 

 immediately apicad of which the mandible is strongly inflated (fig. 190, u); 

 mandible of male not specialized (fig. 190,r). mandibulars group . . 15 

 Median half of clypeal margin truncate or somewhat concave (figs. 179, h-n) ; 

 mandible of both sexes without a subbasal transverse groove and not in- 

 flated 16 



15. Second abdominal tergite with about 400 hairs . . 54. decoratus Holmgren 

 Second abdominal tergite with about 100 to 150 hairs. 



55. mandibularis Cushman 



