No. 22.] HYMENOPTERA OF CONNECTICUT. 737 



thorax and first abdominal segment with ochraceous 

 pubescence floridana 



A. (Emphorcpsis) floridana Smith. 

 New Haven, 28 April, 1902 (W. E. B.). 



A. (Clisodon) terminalis Cresson. 



Mt. Carmel, 27 August, 1904 (P. L. B.). 



°A. (Anthemoessa) abrupta Say. Howard, Insect Book, PI. 

 iii, Fig. 30. 



A. (A.) bomboides Kirby. 



°A. (A.) bomboides canadensis Cresson. 



°A. (Anthophora) ursina (Cresson). 



YLYLMIDM. 



This family is represented by one genus, Hylcrus, which con- 

 sists of small black bees, with pale, usually yellow, marks. 



Hylaeus Fabricius. 



Prosopis Fabricius. 



Key to Species. 



Females. 

 Fore coxae simple; at least the bases of tibiae yellowish; 

 propodeum rugose; first to sixth dorsal abdominal seg- 

 ments black. 



1. First segment and base of second segment of abdomen black; 



clavate face mark present 2 



First segment and base of second seg/ient of abdomen red- 

 dish nelumbonis 



2. Collar black; length 4-5 mm 3 



Collar with yellow marks; tubercles and face marks yellow; 



length 5-6 mm 4 



3. Clypeus, tubercles, and tegulae usually with a yellow spot . . 



pygmaeus 



Clypeus with a subapical yellow band ellipticus 



4. Edge of wing-base and tegulae black, the latter sometimes 



with a yellow dot 5 



Edge of wing-base and spot on tegulae yellow ziziae 



5. Clypeus black " 



Clypeus with a trilobed yellow mark at apical margin.. 



varifrons 



47 



