MONO(JKAPH OF THE NORTH AMERICAN PROCTOTKYPID.E. 225 



vaU', tbe club 5 or jtiiuteil, siibsolid, in <J tiliforni, suhinonilit'orin, the 

 secoinl Hagt'lliir joint sliorter tliaii the tirst or tliird. 



Mandibles bitid at tips. 



Thorax ovoid, the prothorax rounded before, not, or scarcely, visible 

 from above, ex(-ept the lateral anji;les; niesouotutu broader than long, 

 with two distinct furrows; scut< Hum semicircular, subconvex, with a 

 punctate frenum behind; metathorax short, carinated at apex. 



Front wiujjs with the submargiiud vein n aching the costa a little 

 beyond the middle of the wing, the marginal vein 'usually a little thick- 

 ened, although linear and scarcely as long as the short stlgmal, the lat- 

 ter knobbed at tip, the postmargiiial vein very long; basal uervure 

 wanting or subobsolete. 



Abdomen oval or oblong oval, the first three segments nearly equal, 

 the third, usually a little the longest. 



Legs with all femora and the anterior tibite clavate, tibial spurs 1, 1, 1, 

 the basal joint of hiud tarsi thrice, or a little more than thrice, as long 

 as the second. 



The distinct parapsidal furrows, transverse head, short or puncti- 

 form marginal vein, and absence of the horn at base of abdomen dis- 

 tinguish the genus. 



Two species in our fauna can be thus tabulated : 



Thorax and abdomen, t'xcej>t Hometiines the tip, brownish-yellow 2 



Mostly bl.ick, the collar, pleura, and base of abdomen pale. 



Scutellum smooth, highly i)olished A. virginiensis. 



2. Head black or fuscous. 



Scape, mandibles, and legs yellowish A. nigrickps. 



Anteris virginienais, sp. nov. 



S. Length, 1.20'""". Black, shining; head transverse; mesonotum 

 very faintly punctate, in marked contrast to the highly polished scu- 

 tellum; collar, pleura, and base of abdomen rufous or yellowish; man- 

 dibles rufous. Antennje 12-joiuted, filiform ; scape as long as the first 

 three flagellar joints united; pedicel small, round; first funiclar joint 

 the longest, about twice as long as the second; the following joints 

 about equal, longer than the second, but not quite as long as the first. 

 Mesonotum with two distinct furrows. Scutellum semicircular, smooth, 

 polished. Metathorax very short, polished, its x>osterior margin cari- 

 nated. Legs, including coxae, honey-yellow. Wings hyaline, iridescent, 

 the marginal vein thick, as long as the stigmal, the latter oblique, end- 

 ing in a knob, the postmarginal about three times as long as the mar- 

 ginal, the basal vein subobsolete. Abdomen long-oval, as long as the 

 head and thorax together, smooth, polished, the first segment and the 

 second, at base, striated ; the first segment is yellowish, the third the 

 largest, about one-third h>nger than the second, or a little more than 

 twice as long as the fourth. 

 21899— No. 45 15 



