138 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



as basal width of mandibles; eyes very shallowly emarginate within; thorax 

 opaque granular with scattered faint punctures; propodeum with strong 

 carinae, areas granular, the petiolar area transversely rugulose posteriorly 

 and deeply excavated, areola barely angulate at the costulse, basal middle 

 area minute quadrate; areolet minute, with the outer cross vein bullated 

 apically; nervellus distinctly broken some distance above anal vein; first 

 tergite with a punctiform impression medially somewhat in front of the 

 spiracles, the segment in side view swelling somewhat abruptly from this 

 point backward. 



Black with all coxae and hind trochanters black, rest of legs, mandibles, 

 and scape beneath rufo-testaceous, the front and middle legs somewhat 

 paler, the hind tibiae slightly infuscated apically and near the base; tegulte 

 yellowish; wings hyaline, veins and stigma fuscous. 



Male. Length 5 mm. Differs from the female but very slightly. 



Host: Polychrosis viteana. 



Type locality: North East, Pa. 



Type: Cat. No. 19155, U. S. N. M. 



Described from a large series of both sexes reared by the author 

 and his associates, Dwight Isely and E. R. Selkregg, from the 

 above host under Quaintance No. 7895, during the season of 1914. 

 This species has been previously recorded" from the same host 

 by Johnson and Hammar (Bur. Ent. Bui. 116, Part II, p. 48) 

 as Omorgus nolce Ashm. race. 



The species varies more or less in nearly all the characters men- 

 tioned above, especially in venational and propodeal characters. 



Omorgus ferrugineipes Ashm. 



Three females and a male of this species are at hand reared 

 by the writer from larvse of Polychrosis viteana at North East, 

 Pa., during the season of 1914 and under Quaintance No. 7996. 

 These differ only in minute details from the unique type male. 

 In the female the basal middle area of the propodeum is triangu- 

 lar, but not petiolate behind as it is in type. The female is 5 

 mm. long and the ovipositor 1.25 mm. 



Omorgus phthorimaeae n. sp. 



This species is very distinct from all the species included by the annula- 

 tion of the hind tibiae. 



Female. Length 5 mm.; ovipositor 1.25 mm. In size, form, and sculp- 

 ture very like tortricidis, described above, but differing from that species 

 in the following particulars: clypeus not at all elevated and without shal- 

 low median impression; basal middle area of propodeum twice as wide at 

 base as at apex and about two and one-half times as long as wide at apex, 

 areola distinctly angulated at the costulao, its bounding carinse parallel 

 for a short distance back of the costulae; first tergite without median im- 

 pression and in side view more evenly swelling posteriorly; nervellus !<-< 

 distinctly broken sometimes not at all. 



