220 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



men, are stramineous; dorsum of abdomen black, except 



third dorsal segment, which is nearly orange in color 



pyraustae 



2. Antennae stramineous uniformis 



Antennae blackish or brownish delicatus 



*M. pyraustas Viereck (new species). 



Length 5 mm. ; exserted portion of ovipositor 5.5 mm. long. 



Type locality: Westville. Bred from a lot of material from 

 which the fern leaf-roller (Pyrausta theseusalis) was reared, 

 upon which it is probably parasitic. 14 July, 1900 (W. E. B.). 



°M. delicatus Cresson. 



This species has been bred from tortricid larvae, and is an 

 American parasite of the cosmopolitan codling moth (Carpo- 

 capsa pontonella). 



°M. ? uniformis Provancher. 



Helconidea Viereck. 



Helcon Authors, not Nees. 



Type : Helcon (Equator Nees. 



°H. ligator (Say). Bracon ligator Say. Howard, Insect Book, 

 PI. viii, Fig. 41 (Helcon ligatus). 



Length 9 mm. ; black ; abdomen and legs rufous, tarsi blackish 

 at tips; antennae with a white annulus beyond the middle on the 

 female ; wings hyaline, veins fuscous ; hind tibiae fuscous, their 

 tarsi whitish ; exserted portion of ovipositor blackish. 



Eumacrocentrus Ashmead. 



°E. americanus (Cresson). 



Length 14 mm. ; mostly black, except the legs, which are red- 

 dish brown stramineous; exserted portion of ovipositor about 

 three times the length of the body ; antennae about 12 mm. long. 



Helcon Nees. 

 Gymnoscelus Foerster. 



°H. pedalis (Cresson). 



Length 12 mm. ; antennae about 8 mm. in length ; exserted por- 

 tion of ovipositor 10 mm. long ; color approximately as in Euma- 

 crocentrus americanus, except the femora, tibiae and tarsi of the 

 hind legs, which are all mostly blackish. 



