306 AMERICAN HYMENOPTERA. 



Polyoncus platynu^ u. sp. 



% . — 4 mm. Black, with face, mouth-parts, occiput, cheeks hehind eyes, base 

 of autemife beneath, prothorax except dorsal spot above, tegulte, suture between 

 pro- and raesopleurse, sternum and four anterior coxae and trochanters, lemon- 

 yellow; remainder of legs, narrow apical portion of abdominal segments, entire 

 apical segment and more or less of a broad stripe on lateral portions of abdomen, 

 ferruginous ; apex of posterior tibise and the tarsi dusky ; wings smoky, nervures 

 and stigma brown ; thorax broad, shagreened, parapsidal grooves present ; ab- 

 domen broad, oval, polished, punctured, pilose; petiole flat above. 



Three specimens from Agricultural College, Michigan (types, coll. 

 College and Davis). 



Polyoncus lueiitalis n. sp. 



5 . — 4 mm. Brownish black with broad orbital lines, clypeus, mouth-parts, 

 except teeth, tegulse and four anterior legs, honey-yellow; posterior legs dark 

 honey-yellow with upper part of coxse, base and apex of tibise and tarsi dusky ; 

 wings subhyaline, iridescent; nervures and stigma yellowish brown; antennae 

 reddish brown ; thorax shagreened, parapsidal grooves scarcely distinct ; abdomen 

 smooth, polished, suhcompressed at apex ; basal two-thirds of venter honey-yellow ; 

 ovipositor slightly exserted. 



One specimen from New Hampshire (type, coll. Amer. Eut. Soc). 



Polyoncus unicus u. sp. 



J . — 4 nam. Black, with face including orbital lines each side of antennae, 

 mouth-parts, entire cheeks back of eyes, antennae beneath at base, scutellum, 

 lateral fourth on each side of abdomen beyond first segment, entire two apical 

 segments and the legs, brick-red ; posterior tarsi, tibiae at apex and the antennae 

 dusky ; there are also rufo-piceous spots on notum and sternum of mesothorax ; 

 tegulae yellow ; wings fuseo-hyaline, paler at base; nervures and stigma brown ; 

 abdomen short, heavy, truncate and longitudinally concave above ; ovipositor 

 exserted, strong and straight; entire body covered with a yellowish pile, most 

 abundant on abdomen. 



One specimen from Agricultural College, Michigan (type, coll. 

 Davis). 



Polyoncus suburbe n. sp. 



9 . — 5 mm. Honey-yellow, witli spot on vertex enclosing ocelli, meso- and 

 metanotum. petiole, basal two-thirds of segment 2, median spot on apical half of 

 segment 3 and median dorsal portion of remaining segments, black; scutellum 

 rufous; legs honey-yellow, except apex of femora, narrow anuulus at base and 

 broad annulus at apex of tibiae and the tarsi of posterior legs, which are black, 

 wings hyaline, stigma and veins blackish ; antennae dark brown, paler at base 

 beneath ; abdomen suhcompressed and truncate at apex ; ovipositor slightly 

 exserted. 



One specimen from the suburbs of ]\Iadison, Wis. (type, coll. 



Davis). 



SYCHXOL,ETER Foerster. 



(Synopsis der Fam. und Gatt. der Ichneumonen, 1868.) 



Syclinoleler spatiosiis n. sp. 



J.— 7 mm. Black, with face, anterior orbital lines, antennae beneath, mouth- 



