1911] Brues — Ophionince with toothed Femora 25 



three fourths as long as the body; setaceous; first and second flagellar joints 

 of equal length, much elongated; third and fourth each one third shorter than 

 the preceding one, following joints shortening until those just before the 

 apex are but little longer than wide. Mesonotum shagreened, with sparse 

 and large punctures; notauli very distinct on their anterior half beyond 

 which each one fades out into a group of short longitudinal strigae. Scutellum 

 convex, sub triangular but sharply rounded at the tip; with a deep crenulated 

 furrow across the base. Metanotum elongated, quite distinctly excavated 

 medially along its entire posterior slope; basal area elongate, 4-sided; median 

 area large, elongate, separated from the elongate petiolar area. Lateral 

 and pleural areas completely separated; spiracles round, of moderate size. 

 Tip of metathorax extending considerably beyond the insertion of the hind 

 coxse; its upper surface shagreened between the carinse and sparsely punctate 

 on the sides. Mesopleura with sparse coarse punctures and a deep oblique 

 impression above, its upper anterior angle obliquely striated. Propleura 

 with a few irregular and very indistinct striae and a few punctures above. 

 Abdomen very long and slender, one half longer than the head and thorax 

 together. Petiole gradually enlarged toward its apex, the spiracles placed 

 at its apical third each one giving off a carina which extends to the basal 

 third of the petiole; second segment as long as the first, shining on its basal 

 third but opaque beyond; following segments much shorter and becoming 

 much compressed. Ovipositor issuing from the apex of the fifth segment, 

 as long as the body. Wings (see fig. 10) pure hyaline, slightly infuscated at 

 their extreme tips; stigma broad, subtriangular, the radial cell moderately 

 long; areolet present, very narrow and strongly oblique; third discoidal cell 

 very much narrowed at its base although the discocubital vein is but little 

 curved; discoidal vein in anterior wing broken far above the middle; in 

 posterior wing complete, unbroken. Legs slender, the posterior femora each 

 with an acute tooth before the apex but without any serrations. Body 

 fulvo-ferruginous; antennae, except basal joint, and tips of mandibles black; 

 front above antennae somewhat infuscated, the clypeus, mandibles and inner 

 orbits pale yellow or testaceous. Abdomen with the petiole except base and 

 apex; anterior half of second segment, base of third and dorsal spots on the 

 following segments piceous or black; ovipositor black. Legs pale yellow, 

 the posterior femora except extreme base and apex and the tibiae at base 

 and apex dull piceous. 



Described from a female collected at Blue Hills, near Boston, 

 Mass., August 10, 1910. 



This peculiar species apparently belongs to the tribe Pris- 

 tomerini on account of its broad stigma although the venation 

 is otherwise suggestive of Eiphosoma as is also the more strongly 

 produced apex of the metathorax and the indication of a median 

 methathoracic excavation. The genus Xiphosomella estab- 

 lished by Szepligeti (Gen. Insect, fasc. 34, p. 4; 1905) for a 



