G. C. DAVIS. • 225 



Steiioiiiacriis iiitritus n. sp. 



"J,.— 2raiu. Black, with broad median stripe on face. nioutli-]iarts. antenna; 

 beneath, trochanters, four anterior tibife and tarsi and most of tlieir coxse and 

 femora beneath, brownish yellow ; antennae above, coxse. femora and tegulae 

 brownish black; wings hyaline, iridescent; nervures and stigma whitish, the 

 latter small and with radius starting near the base ; areolet wanting; the entire 

 body is polished and without sculpture, except a few irregular fine wrinkles on 

 basal segment of abdomen ; metathorax depressed and with small, but distinct 

 carinse ; abdomen depressed ; antennae long and with loosely connected segments. 



One specimen from Canada (coll. U. S. Nat. Mus.). 



Steiioniacrus ha^tlatus n. sp. 



9 . — 3 mm. Black, with two legs, mouth-parts, scape beneath and ovipositor, 

 pale honey-yellow; face dark piceous; wings hyaline, nervures and stigma dirty 

 white, the latter small, and with radius originating near the base ; areolet want- 

 ing; body polished; metathorax rugosely shagreened and with large prominent 

 carinse ; basal segment of abdomen irregularly rugosely reticulate with basal 

 two-thirds tuberculate, behind which are rather broad, deep impressions; second 

 segment less roughly rugose on basal half and abruptly met by a polished sur- 

 face on apical half; thyridia are located much farther back than usual and close 

 behind them are distinct depressions; rest of abdomen polished. 



One specimen from Siskiyou County, Cala., and is in coll. U. S. 

 Nat. Mus. 



Stenoinacriis ? stigiiiatias Walsh (Orthocentrus), Tr. St. L. Acad, iii, 101. 

 J. — 4 mm. Black, with face, scajie beneath, cheeks, mouth-parts, four anterior 

 legs, and very narrow apical margins of first three abdominal segments, pale 

 yellow; hind legs and antennae dark rufous, latter more yellowish beneath; 

 mesosternum rufous, sometimes black; wings hyaline, veins and stigma black, 

 the latter "a little hunched on the costal margin and very strongly hunched on 

 the side adjoining the discoido-cubital cell so as to describe a circular arc of 45°" ; 

 areolet with outer nervure visible only in certain lights: abdomen opaque, densely 

 rugose, suopolished toward apex ; basal segment convex, slightly concave on 

 middle fourth. 



Two females from Illinois. Types are probably lost. The de- 

 scription is taken from that given by Walsh, and is placed here a.s 

 it agrees with this genus in the form of stigma. 



CAMEROTOPS Foerster. 

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

 Thorax black; basal segment of abdomen not aciculate. 



Metanotum strongly shagreened and without distinct carina; ; abdomen strongly 



compressed ainericaiiiis Ashm. 



Metanotum polished and with prominent carinae. 



Third abdominal segment shagreened ; abdomen scarcely compressed ; most 



of head honey-yellow aspfrus n. sp 



Third abdominal segment polished ; abdomen compressed : face piceous. 



preiiiitus n. sp. 



Thorax mostly pale rufous or yellowish ; two basal segments of al)domen finely 



and rather irregularly aciculate uliiiic4»Ia Ashm. 



TRANS. AM. ENT. SOC. XXIV. (29) AUGUST. 1897. 



