Article VII. — Descriptions of three New Parasitic Hymen- 

 optera from the Illinois River. By William H. Ash- 

 mead. 



Family PROCTOTRYPID^. 

 Phanurus Thomson. 



Phanurus tabanivorus, sp. n. [Fig. 55, 56.] 



9.— Length 1.2 to 1.3 mm. Polished black, impunctatej 

 the head and thorax clothed with a fine sparse pubes- 

 cence. Head subquadrate, roundly emarginate behind, 

 a little wider than the thorax; eyes oval, faintly pubes- 

 cent; antennae 11-jointed, black, if extended backwards 

 not quite reaching to the apex of thorax, and terminat- 

 ing in a long fusiform 5-jointed club, the first joint of 

 which is not quite as wide as the second, ob-trapezoidal,^ 

 twice as wide as long, the second, third, and fourth joints 

 transverse-quadrate, a little wider than long; the fifth 

 or last joint conical and a little narrower than the- 

 preceding joint; the scape is about as long as the 

 funicle with the pedicel, the latter obconical ; joints of 

 funicle a little narrower than the apex of the pedicel 

 the first joint scarcely longer than thick, the second and 

 third small, transverse-moniliform. 



Thorax subovoid, not twice as long as wide, the meso- 

 notum scarcely longer than wide, the scutellum lunate, 

 polished, without pubescence; wings hyaline, ciliated, 

 the cilia on the anterior and posterior margins long, 

 much shorter at apical margin; tegulae black; venation 

 brown, the marginal vein a little shorter than the stig- 

 mal, the latter only slightly thickened at tip, the post- 

 marginal vein ver\' long, fulh- two and a half times as 

 long as the stigmal ; legs fuscous, the trochanters, knees, 

 tips of tibiae and tarsi honey-yellow or testaceous. 

 Abdomen elongate, pointed-fusiform, about twice as Ion g^ 



