No. 22.] HYMENOPTERA OF CONNECTICUT. 289 



Symphobus Foerster. 



S. pleuralis Cresson. 



Female : body 5 mm. long ; ovipositor with its exserted portion 

 5 mm. long. ; body mostly black, with pleurae, sternum, scutel and 

 lateral portions of second and third abdominal segments reddish ; 

 legs honey-yellow ; hind tarsi and apex of femora and tibiae also 

 dusky; abdominal segments beyond the second distinctly mar- 

 gined with white ; areolet petiolate. 



Oxytorus Foerster. 



0. antennatus Cresson. 



Female : length of body 7 mm. ; reddish to blackish red, with 

 the head opaque, blackish, antennae with a white annulus, rest of 

 antennae blackish except the scape, which, like the mouth-parts, 

 is reddish ; hind tarsi annulated with white ; wings hyaline, veins 

 and stigma pale. 



Rogas Nees. 



Alexeter (Foerster) Wolstedt. 

 Key to Species. 



Antennae with a white annulus; hind femora and coxse red- 

 dish; notauli wanting honestus 



Antennae without a pale annulus; scutel reddish; notauli pres- 

 eut; thorax and abdomen pale, unicolorous; head con- 

 qplorous with thorax, face more or less yellow . . . canaliculatus 



*R. honestus Cresson. 

 Female and male : length 6-8 mm. ; mostly reddish. 



R. canaliculatus Provancher. 



Female and male: length 8-1 1 mm. ; mostly pale honey-yellow 

 to reddish, with the face, mouth-parts, tegulae, fore and mid legs 

 yellowish or pale. 



Hadrodactylus Foerster. 

 Key to Species. 

 Thorax black; second abdominal segment scarcely longer than 

 broad; hind legs reddish; abdomen sometimes dusky at 

 apex, the latter mostly reddish; trochanters usually, and 



fore and mid coxse, yellow inceptus 



Thorax reddish; head black; face and hind tarsi yellow 



longicornis 



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