CHARLES W. HOOKER. 95 



Ophiopterus ferrugineus Dalla Torre, Idem, p. 180, listed 1901. 



Nototrachys annulicornis Szepligeti, Gen. Ins., Hym., 34me Fasc, 



p. 20, n. 5, listed 1905. 



Ophiopterus ferrugineus Szepligeti, Idem, p. 37, n. 2, listed 1905. 



Ferruginous to fulvous ; ocelli small ; antenncB with narrow yellowish 

 white band near the apex, base fulvous, clothed with fine white pubes- 

 cence. 



Length, 12-18 mm. ; wing, 8-9 mm. ; spread, 17-20 mm. ; antennae, 

 12-18 mm. ; ovipositor, 5 mm. 



Ferruginous to fulvous ; head and thorax clothed with fine white 

 pubescence, with coarse raised punctures ; sides of face and posterior 

 orbits yellowish, head slightly produced behind the eyes and bordered 

 with a keel ; eyes and ocelli black, eyes not emarginate, ocelli small, 

 well separated from each other and from the tops of the eyes ; antennae 

 as long as the body, filiform, dark ferruginous to fuscous, with yellow- 

 ish-white band about 5 mm. from the apex, base fulvous ; face broad, 

 coarsely punctured ; clypeal foveae distinct ; mandibles bidentate, tipped 

 with black. 



Thorax of the general color, sutures distinct. 



Mesonotum and scutellum separated by a black transverse furrow, 

 in one case with three weak transverse carinse ; mesopleurae with a small 

 black spot below the base of the wings. 



Metathorax globular, finely reticulate, produced behind into a neck 

 two-thirds the length of the hind coxae, with two more or less distinct 

 dorsal areolets at the insertion of the abdomen ; wings hyaline, faintly 

 dusky at the tips ; stigma and nervures fuscous ; discocubital nervure 

 arcuate, first recurrent vein about two-thirds the length of the second ; 

 radial vein not enlarged, its outer end bent upward; radial vein of 

 hind wing becoming indistinct about 1 mm. beyond its union with 

 the transverse cubital vein. 



Legs pale ferruginous, the four anterior tarsi more or less yellowish, 

 posterior tarsi, and in some cases the claws, black ; with the second 

 and part of the third joints whitish-yellow ; posterior coxae greatly 

 elongate, three times the length of the anterior; trochanters elongate, 

 the four posterior ones half the length of their femora ; claws pecti- 

 nate. 



Abdomen long, very slender, strongly compressed, often lighter than 

 the rest of the body, but slightly fuscous above, especially on the sec- 

 ond segment ; sheath of the ovipositor black, ovipositor moderately 

 long.* 



* Cresson describes the ovipositor as very short, but in his 9 type it 

 is only slightly exserted, being partly enclosed in the sheaths ; where 

 fully exserted it is seen to be longer and more slender than in most 

 American members of this tribe. 



TRANS. AM. ENT. SOC, XXXVIII. 



