ART. 2. ICHNEUMON-FLY GENUS METEORUS MUESEBECK. 9 



14. Posterior coxae somewhat roughened and opaque on outer face; second abecieea 



of radius about twice as long as first; malar space a little shorter than basal 

 width of mandibles; female antennae about as long as head and thorax united 

 with 23-26 segments; ovipositor sheaths slightly longer than abdomen. 



13. humilis (Cresson). 



Posterior coxae smooth and polished, rarely weakly punctate near base and then 



not combining all the above characters 15 



15. Antennae slender and composed of 33-37 segments, very rarely with only 31 or 



32; first flagellar segment a little shorter than second; posterior tibiae brown or«u 

 blackish, except at extreme base and sometimes along upper margin; oviposi- 

 tor sheaths slightly longer than body, where female is known 16 



Antennae and posterior tibiae not as above; oviposit«r sheaths either longer than 

 the entire body or shorter than abdomen 17 



16. Face smooth, practically without sculpture; first tergite irregularly wrinkled 



before apex, the spiracles prominent; second tergite black; stigma uniformly 



brown 14. alaskensis (Ashmead) 



Face coarsely coriaceous or finely rugulose; first tergite with complete, strong 

 striae; second tergite ferruginous; base of stigma pale. . 15. tibialis, new species. 



17. Malar space in both sexes at least as long as basal width of the unusually broad 



mandibles; second abscissa of radius about twice as long as first; ovipof<itor 

 sheaths somewhat longer than the entire body. ... 16. terebratus, new species. 

 Malar space not as long as basal width of the more normal mandibles; second 

 abscissa of radius much less than twice as long as first; ovipositor sheaths a 

 little shorter than abdomen 18 



18. Ocell-ocular line two and one-half times as long as greatest diameter of an ocellus; 



first abscissa of radius shorter than second ; female antennae much shorter than 

 the body, wdth 23-25 segments, those beyond middle as broad as long. 



17. Mcorlae, new species. 



Ocell-ocular line usually not distinctly twice as long as greatest diameter of an 



ocellus; first abscissa of radius usually as long as second; antennae of both sexes 



about as long as the body, and with 30-34 segments. . 18. trachynotus Viereck. 



19. Ocell-ocular line three times, or nearly, as long as the greatest diameter of an 



ocellus; head large; clypeus unusually large and flat; abdominal petiole very 

 slender; the ventral margins of the first tergite joined for half the length of the 

 segment; female antennae bright yellow, blackish at apex, 22-24 segmented; 

 male antennae fuscous, more slender, 29-31 segmented; ovipositor sheaths 



about as long as the abdomen 19. tauricornis (Provancher). 



Ocell-ocular line rarely twice as long as greatest diameter of an ocellus; clypeus 

 normal, convex; female antennae longer; ovipositor sheaths never as long as the 

 abdomen 20 



20. Ventral margins of first abdominal tergite meeting at base of petiole and touch- 



ing for nearly half the length of the segment; ocelli large, the ocell-ocular 

 line very rarely one and one-half times as long as the diameter of an ocellus; 

 petiole, at least basally, always pale, the postpetiole usually more or less 



black 24 



Ventral margins of first tergite meeting considerably beyond extreme base of 

 petiole, and at most joined for only a short distance; ocelli smaller, the ocell- 

 ociilar line usually one and one-half to two times as long as the diameter of an 

 ocellus; first tergite uniformly black or brown, very rarely entirely yellowish. . 21 



21. Stigma brown, pale at base and apex or along anterior margin 22 



Stigma uniformly pale yellow, transparent 23 



