G. C. DAVIS. 365 



distinct; apical median area not distinctly reticulate; abdomen slender, com- 

 pressed, second segment longitudinally aciculate; postpetiole smooth. 



Four specimens from Agricultural College, Michigan. 



Creniastiis $;raiiiil»tus u. sp. 



"J, 9. — 5 mm.; ovipositor 2.5 mm. Black, with thorax and middle segments 

 of abdomen more or less piceons or rufous; orbits, face except black spot beneath 

 antennfe in 9, mouth-parts, prothorax tegulfe, and legs, except middle of hind 

 femora, their tibiae and tarsi, which are fuscous, pale yellow; wings hyaline, 

 nervures and stigma yellowish brown, the latter rather large and elongately 

 triangular; thorax opaquely punctured, metathorax with carinse faint toward 

 apex where it is somewhat reticulate; second abdominal segment and postpetiole 

 distinctly aciculate. 



Six specimens from Agricultural College, Michigan. 



L.e|>topygii!« orbiis n. sp. 



'^ 9 . — 8 mm. ; ovipositor 4 mm. Black, with abdomen beyond second seg- 

 ment, ferruginous ; orbits, broad in %, cheeks beneath, mandibles, tegulse, and 

 in % scape beneath, spot on face; clypeus, apex of femora, slightly so in <2 , 

 apical trochanter and four anterior coxse, yellow ; clypeus and scape beneath of 

 9 rufous ; cosse black, anterior ones pale beneath ; rest of four anterior legs 

 ferruginous, hind legs piceous. nearly black in 9: wings short, subhyaline, ner- 

 vures and stigma large, brown, paler at base, discal cell considerably narrowed 

 at base; body polished, shagreeiied, sparsely but distinctly punctured on thorax ; 

 parapsides indistinct ; metathorax short, rounded, completely areolated, the apical 

 median area very short, polished, coarsely reticulate in % ; postpetiole and second 

 segment of abdomen considerably broadened, not distinctly aciculate, but opaquely 

 shagreened on two; legs more robust than usual. 



Two specimens from Delaware County, Pa. (Chas. Johnson), and 

 Michigan (Watkins). 



ExeJastes exploratus n. sp. 



9 '^ . — 11 mm.; ovipositor 1.5 mm. Black, four anterior legs fulvous with 

 coxse and trochanters black ; posterior legs with coxae, trochanters, tibiae, except 

 base, which is often rufous, and basal segment of tarsi, black; hind femora ru- 

 fous, and tarsal segments, except basal one, yellowish white, sometimes dusky: 

 wings vary from fuliginous (9) to subhyaline ( % ), veins black, stigma reddish 

 Ijrown or black, white at base; transverse median vein of hind wing broken 

 much above the middle, second recurrent nervure sinuate, and pale above the 

 middle; head coarsely punctured, clypeus prolonged, shagreened, not separate, 

 sometimes rufous; antennae long, slender, tajiering ; thorax coarsely punctured, 

 metathorax scabrous ; abdomen smooth, shining, coarsely i)uuctured on lateral 

 base of first segment. 



Twelve females and four males from So. Dakota (Prof Aldricli) 

 and Michigan. 



At first this species was placed with rafofemordius Prov., hut upon 

 accumulating so much material and finding no variation, and tiien 



TRANS. AM. KNT. SOC. XXIV. ')KCKMHI<;K. IHilT. 



