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



A. bisalicis Viereck. A. salicis Robertson. 

 Hartford, 25 April, 1897 (S. N. D.). 



A. salictaria Robertson. 

 Hartford, 10 May, 1896 (S. N. D.). 



A. victima Smith. 



Hartford, 29 April, 1894 (S. N. D.). 



DUFOUREIDyE. 

 Only one species of this group is recorded from the State. 



Halictoides (Conohalictoides) novaeangiiae Robertson. 



Almost entirely black. Length 6-7 mm. Some black hairs 

 on the head, but the pubescence is mostly whitish; facial line 

 longer than the transfacial line. Has been taken in July and 

 August. This species visits the pickerel-weed (Pontederia 

 cordata) and is doubtless present wherever the pickerel-weed 

 grows. 



Sachem's Head, 4 August, 1904, Thompson, 12 July, 1905 

 (H. L. V.). 



MACROPIDiE. 



The species of this family are succinct and almost entirely 

 black. Only one genus is on record, and the characters of the 

 family will suffice for its recognition. 



Macropis Panzer. 



Key to Species. 



Females. 



1. Hind metatarsi mostly with pale whitish pubescence 2 



Hind metatarsi mostly with dark, blackish pubescence ..morsei 



2. Punctation, especially of scutel, sparse ciliata 



Punctation, especially of scutel, dense patellata 



Males. 



1. Hind metatarsi oblong or nearly so 2 



Hind metatarsi cuneiform patellata 



2. Hind tibiae with a yellow spot at base ciliata 



Hind tibiae entirely black rnorsei 



M. patellata Patton. 



Occurs all over the State, and flies at least from 6 to 21 July, 

 visiting flowers of Cicuta maculata, Rhus glabra, and Stevronema 



