Mo. 22.] HYMENOPTERA OF CONNECTICUT. 347 



[0. Thorax entirely or partly black 31 



Thorax entirely reddish; third antennal joint scarcely longer 

 than fourth; apex of abdomen with a pale spot. Length 



9 mm putus 



[I. Antennae with a distinct pale annulus 32 



Antennae without a distinct annulus 34 



\2. Apex of abdomen dusky or black, without pale spots; second 



dorsal segment reddish. Length 12.5 mm 33 



Apex of abdomen with pale spots; mesonotum and a large 



mark on mesopleurae reddish. Length 7.5 mm terminalis 



13. Areola and petiolarea not confluent, but separated by a raised 



line instabilis 



Areola and petiolarea confluent, not separated by a raised 

 line; head black; first to fifth joints of flagel brownish, 

 sixth to eleventh yellowish, rest dark brown; propodeum 

 black; coxae and most of trochanters black; fore tibiae 

 mostly brownish; mid tibiae mostly black, hind tibiae black 

 except for a brownish base ; most tarsi uniformly brownish 



winkleyi 



4. Second dorsal abdominal segment with black stains; length of 



body 9.5 mm.; apical half of antennae blackish, lower half 

 merging in color from reddish to brownish to yellowish; 

 head almost entirely dark reddish; pronotum, a line beneath 

 insertion of wings, and dorsulum, reddish; scutel reddish 

 with a yellowish tinge; legs reddish except coxae, which are 

 black, proximate trochanters, apical half of hind femora, 

 and apical fourth of hind tibiae, which are mostly blackish; 

 second dorsal abdominal segment with blackish stains 



brittoni 

 Second dorsal abdominal segment reddish throughout. 

 Length 12.5 mm instabilis var. 



5. Wings fuliginous 36 



Wings hyaline or subhyaline 4 



6. Hind coxae without a distinct velvety area or not at all vel- 



vety beneath 37 



Hind coxae with a distinct velvety area beneath; thorax 

 black. Length 17-25 mm '. grandis 



7. Thorax black 38 



Thorax more or less reddish; hind legs, except coxae, entirely 



reddish; head reddish; second dorsal abdominal segment 



in some individuals black at base. Length 14 mm lewisi 



8. Hind legs mostly, but not entirely, black 39 



Hind legs entirely black. Length 12.5-17.5 mm rufiventris 



9. Hind tibiae white at base. Length 14-20 mm devinctor 



Hind femora reddish. Length 14-16 mm. insolens 



0. Thorax mostly black 41 



Thorax mostly reddish S 3 



