No. 22.] HYMENOPTERA OF CONNECTICUT. 707 



because like others of its congeners it causes fruit to set by 

 transmitting pollen from flower to flower in its quest after pollen 

 and nectar. 



H. (C.) albipennis Robertson. 



First record from Connecticut, New Haven, 17 Tune. lOO"; 

 (H. L. v.). ^^ 



H. (C.) cressoni Robertson. 



Is on record from localities representing the entire State, and 

 has been taken at Branford, New Haven, Putnam, and Scotland, 

 in June, July, August, and September. 



H. (C.) vierecki Crawford. 



New Haven, 24 May 1904, 25 July 1905 (W.E.B.) ; Putnam, 

 12 July, 1905 (H.L.V.). 



H. (C.) sparsus Robertson. 



Occurs all over the State, and has been taken at Branford, 

 Brookfield, Cheshire, New Haven, Poquonock, Prospect, Putnam, 

 Sachem's Head, Scotland, Stonington, and West Hartford, from 

 May until September. It is one of the most common visitors 

 of the early spring fruit blossoms, visiting in Connecticut 

 especially the gooseberry (in great numbers), black currant, 

 Japan plum (in great numbers), Prunus avium, peach, apple, 

 pear, and quince. 



H. (C.) obscurus Robertson. 



The first Connecticut records for this species are as follows : 

 — Branford, 3, 11, 22 August, 1904, and (collected from peach 

 blossoms) II May, 1905 (H. W. W.). 



H. (C.) versatus Robertson. 



Occurs all over the commonwealth, and has been taken at 

 Branford, Cheshire, Milldale, New Haven, Oxford, Pomfret, 

 Sachem's Head, and Scotland, from May until November. It 

 visits strawberry flowers. 



H. (Paralictus) cephalicus Robertson. 



Thus far only the female of this species has been recognized. 

 The first Connecticut record for the species is New Haven, 10 

 May, 1904 (H. L. V.). 



