No. 22.] HYMENOPTERA OF CONNECTICUT. 347 



30. 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 



31. Antennae with a distinct pale annulus 32 



Antennae without a distinct annulus 34 



32. 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 



33. 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 



34. 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. 



35. Wings fuliginous 36 



Wings hyaline or sub hyaline 40 



36. 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 



37. Thorax black 38 



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



reddish; head reddish; second dorsal abdominal segment 



in some individuals black at base. Length 14 mm lewisi 



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



Hind legs entirely black. Length 12.5-17.5 mm rufiventris 



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



Hind femora reddish. Length 14-16 mm insolens 



40. Thorax mostly black 41 



Thorax mostly reddish S3 



