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



portion of ovipositor about as long as body; length 8-9 



mm.; hind metatarsus more or less fuscous extrematis 



Abdomen above in female with its basal half reddish, its 

 apical half mostly or partly black with a whitish yellow 

 mark at apex; abdomen of male above with its basal 

 joint black, remainder in color as in female; antennae 

 in both sexes with a pale annulus; legs mostly pale, hind 

 metatarsus entirely whitish, exserted portion of ovipositor 

 about as long as abdomen. Length 8-9 mm nuncius 



14. Abdomen with its first, second, and third dorsal segments 



mostly rufous, remainder of dorsum of abdomen black 



except for a white apical spot. Length 5.5 mm 15 



Abdomen above^ at base, and fifth and following segments, 

 black, the rest reddish, though in some individuals the 

 second, third, and fourth dorsal segments may be tinged 

 with blackish. Length d-^ mm canadensis 



15. Exserted portion of ovipositor as long as abdomen alacris 



Exserted portion of ovipositor half as long as abdomen 



hyslopi 



16. Antennae with a pale annulus 17 



Antennae without a pale annulus; wings subhyaline . . americanus 



17. Legs mostly black; exserted portion of ovipositor scarcely 



one-fourth the length of body; length 9-10 mm.; fore tibiae 



and all tarsi more or less tinged with pale rufous limatus 



Legs mostly reddish; exserted portion of ovipositor about 

 half as long as abdomen; apical fourth of abdomen mostly 

 black, its apex yellowish. Length 6 mm hyslopi 



A. rufus Provancher. 



Stafford, 24 August, 1905 (W. E. B.), on flowers of goldenrod. 



A. mundus Provancher. 



New Haven, 19 July, 1905 (B. H. W.). 

 °A. tontiguus Cresson. 

 *A. (Itamoplex) lophyri Norton. 



Parasite on (Lophyrus) Diprion abietis. 



Type locality : Connecticut. 



A. (I.) americanus Cresson. Howard, Insect Book, PL x. 

 Fig. 2. 



Branford, August, 1905 (H. W. W.) ; West Haven, 2y June, 

 1905 (H. L. V.) ; New Haven, 24 August, 1905 (B. H. W.) ; 22 

 June, 1910 (A. B. C.) ; 4 June, 1909 (M. Jagger) ; Stonington, 

 July, 1909 (G. H. Hollister) ; New Canaan, 2y September, 1909, 

 Prospect, 15 August, 1906 (W. E. B.). 

 *A. (I.) cressoni Viereck (new species). 



