NO. 22.] HYMENOPTERA OF CONNECTICUT. 757 



first and second dorsal abdominal segments with yellow 

 hairs, apex with black pubescence affinis 



7. Mesonotum with its yellow pubescence not restricted to 



anterior half 8 



Mesonotum with yellow pubescence only in front; second and 

 third dorsal abdominal segments and apex of abdomen 

 with yellowish pubescence terricola 



8. Mesonotum with yellow pubescence throughout; first, fourth, 



and fifth dorsal abdominal segments with some or all of 

 their pubescence yellow, second with most of its hairs 

 yellow, those at extreme sides black, apex of abdomen with 

 black pubescence above, venter with most of its pubes- 

 cence pale yellow bimaculatus 



Mesonotum with a transverse band of black pubescence; first 

 to fourth dorsal abdominal segments with yellow pubes- 

 cence, fifth mostly with yellow, sixth and seventh with 

 black, second and third with orange pubescence, venter 

 with pale pubescence ternanus 



B. vagans Smith. Howard, Insect Book, PI. ii, Fig. 10. 



Occurs throughout the State, from May to September. Bran- 

 ford, Colebrook, Prospect, Stonington. 



B. vagans var. consimilis Cresson. 



Occurs all over the State in May, June, July and August. 

 Visits apple blossoms. 



B. fervidus Fabricius. 



New Haven, Branford, East Hartford, Mt. Carmel, Salisbury, 

 Torrington, and Milford, in May, June, July, and August (E. J. 

 S. M., H. W. W., W. E. B., P. L. B., H. L. V.). 



B. affinis Cresson. Howard, Insect Book, PI. ii, Fig. 6. 



Occurs throughout the State. Branford, Colebrook, New 

 Haven, and Salisbury. 



B. ternarius Say. Howard, Insect Book, PI. i, Fig. 26. 



Recorded from the State, but is probably confined to the more 

 northern and elevated portions, as it belongs to the Canadian 

 fauna. 



B. pennsylvanicus Degeer. B. americanorum Fabricius. 

 Howard, Insect Book, PI. i, Figs. 30 and 31. 



Seems to fly in all parts of the State from May to August 

 inclusive. 



