276 AMERICAN HYMENOPTERA. 



beneath and a hooked line on margin of mesonotura yellow ; antennae reddish, 

 brown ; wings snbhyaline, iridescent, nerviires and stigma brown, paler at base: 

 stigma thick, triangular; areolet large, triangular, nearly sessile; transverse me- 

 dian nervure uniting back of the basal ; humeral cross-nervure in hind wing 

 broken very low; head transverse, front broad; clypeus transverse, somewhat 

 depressed at apex; thorax polished, pilose, sparsely punctured; no parapsidal 

 grooves; scutelluni small, oval ; metathorax oval, polished and without carina, 

 except beneath spiracles; abdomen pilose, closely and rather coarsely punctured ; 

 ovipositor exserted ; petiole thick, oval, slender at base and with faint groove 

 above. 



Four specimens from Colorado, Nevada, Wasliiiiijton and Idaho 

 (Prof. Aldrich). Type, coll. Davis and Amer. Ent. Soc. 



L.ahrO!<iKyt,a biinsiculatns Ashm. (Grypoeentrus) . Tr. A. E. S. xxiii, 199. 



9 (V) — y mm. Black, with sides of face continued onto clypeus. mouth-parts, 

 tegulae, spot in front, most of tiochanters, four anterior tibise and tarsi, posterior 

 tibife except apex and heel segment of hind tarsi at base, white ; apex of poste- 

 rior femora, tibiae and the tarsi black, rest of legs rufous; wings hyaline, ner- 

 vuresand stigma brown, stigma lanceolate, areolet petiolate very oblique; abdo- 

 men and metathorax coarsely shagreened, head and metathorax punctured and 

 finely shagreened. 



Type from New Hampshire (coll. Ashm.). 



OTI.OPHORUS Foerster. 

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

 Otloplioriis inniiinerabilis n. sp. 



9 % . — 4-8 min. Black, abdomen rufous with petiole black, sometimes second 

 and apical segments dusky in 'J, ; 'legs rufous, coxse and sometimes trochanters, 

 and tibiae and tarsi of hind legs in % dusky, tibiae at apex and hind tarsi in 9 

 slightly dusky: apical half of clypeus, mouth-parts and tegulae, rufous ; antennae 

 black in % , reddish brown in 9 I wings subhyaline, nervures and stigma brown, 

 paler at base; areolet oblique, petiolate: transverse median nervure interstitial 

 with basal : humeral ci'oss-7iervure of hind wing broken much above the middle; 

 head disc-shaped, slightly elongate toward the mouth; face flat, pilose: clypeus 

 not strongly elevated on transverse median carina, upper half black, punctured, 

 lower half polished, rounded at apex ; thorax punctured and polished ; no parap- 

 sidal grooves: scutellum flat, sloping forward, triangular and margined with a 

 carina except anteriorly; metanotum completely areolated : abdomen finely pi- 

 lose, polished, smooth ; ovipositor ventral, guides broad ; petiole thick, moderately 

 broad, scarcely narrowed at base, carinae reaching nearly to apex. 



Seventy specimens from Colorado, Montana, South Dakota, Idaho 

 (Prof. Aldrich), Nevada, Washington, Oregon, Southern California 

 and Mt. Washington, N. H. (Mrs. Slosson). 



Var. feria n. var. --Differs from innumerabilis by having the coxae pale rufous 

 or yellow in % , and without black on the abdomen except on the basal segment. 



Two females and three males from New Hampshire, New York 

 and Michigan (types, coll. Am. E. S., Davis and Mich. Ag. Coll.). 



