394 DESCRIPTIONS OF ICHNEUMONID.E ASHMEAD. 



Described from one specimen reared March 12, 1884, from a sawfly 

 on black birch. 



This pretty little species, as well as the previous described species, 

 looks much like an Hemiteles, but the complete areolet, absence of 

 parapsidal grooves, the subexserted ovipositor and rounded raetathor- 

 acie spiracles show that both belong to the Iehneumones Pneustici, but 

 the mandibles could not be critically examined and they may belong to 

 one of the other genera in this group. 



Phaeogenes ruficoruis sp. nov. 



Female. — Length, 3.6 mm . Black, subopaque, moderately closely punc- 

 tulate ; antennae moderately stout, involuted, brown, the scape a little 

 paler beneath; clypeus, mandibles and legs ferruginous; palpi and 

 tegulae yellow ; abdomen rather closely punctulate, the apical margins 

 of all the segments after the petiole, narrowly ferruginous, the petiole 

 with distinct punctures, the venter ferruginous ; ovipositor slightly ex- 

 serted. Wings hyaline, very faintly tinged; stigma and veins pale 

 brown, the costae to parastigma, yellow. 



Habitat. — St. Louis, Mo.. 



Described from one specimen in Riley collection. 



Phaeogenes niontivagus sp. nov. 



Male. — Length, 6 mm . Black, polished, sparsely covered with a whitish 

 pile; face minutely punctulate, with a somewhat prominent V-shaped 

 ridge, the sides of which extend to the base of each antenna; middle of 

 mandibles, palpi, spot on scape beueath, legs, second abdominal seg- 

 ment, except extreme basal lateral angles and four spots on disk, third 

 segment wholly, most of the disk of fourth, and a spot at base of fifth, 

 ferruginous; basal lateral angles and four spots on second segment, all 

 coxae and first joint of trochanters, middle tarsi, spot at base and the 

 apex of posterior tibiae and tarsi, black; metathorax areolated, the mid- 

 dle discal area hexagonal, spiracles round ; the petiole and basal two- 

 thirds of second abdominal segment, longitudinally aciculated. Wings 

 subhyaline, iridescent; tegulae yellow; stigma and veins brown-black, 

 the cubital nervure with a stump of a vein before the middle. 



Habitat. — West Cliff, Custer County, Colo. 



Described from one specimen received from Mr. T. D. A. Cockerell. 



ISCHNUS Grav. 



Ischnus americanus sp. nov. 



Female. — Length, 8.75' nm . Black, smooth, polished; mandibles, ex- 

 cept tips, palpi, legs and abdomen, ferruginous; the petiole along the 

 sidesand at base, black. Antennae 20-jointed black, when extended back- 

 wards reach to about the apex of the metathorax, and are covered with 

 black pile, the third joint long, about one-third longer than the follow- 



