THE CANADIAN ENTOMOLOGIST. 357 



Table of Genera. 

 Front wings witli three cubital cells ; pronotum often with a tubercle at 



base above 2. 



Front wings with two cubital cells ; pronotum never with a tubercle at 

 base above. 



Metathorax subquadrate, a little longer than wide, squarely truncate 

 posteriorly, but the superior hind angles not produced into strong 

 teeth, at the most with a small tubercle or tooth, the dorsum with 

 longitudinal carinpe, the interstices transversely striate ; claws with 

 a median tooth beneath; maxillary palpi 6-, labial palpi 4- 

 jointed ; head ivithout a frontal area above antennae ; submedian 

 cell not longer than the median ; first flagellar joint longer than 2-3 

 united ; pronotum fully twice as long as wide at 



base , Rhinopsis, Westw. 



Metathorax quadrate, the superior hind angles more or less produced 

 into blunt tubercles or short teeth, the dorsum sculptured as in 

 Rhinopsis ; claws cleft ; head with a frontal area above the 

 antennae, or at least with strong lateral carinse extending from base 

 of each antenna backwards towards the ocelli ; submedian cell a 

 little longer than the median ; first flagellar joint not longer than 

 2-3 united ; pronotum not or only a little longer than wide at 



base Waagenia, Kriechbaumer. 



2. Superior hind angles of metathorax produced into strong teeth or long 

 spines ; claws cleft. 



Face normal, without an enclosed frontal area above the antennae ; 

 pronotum always tuberculate; abdomen in 9 compressed at apex; 



metathoracic spines very long Chlorampulex, Sauss, 



Face with a frontal area above the antennae, which encloses the front 

 ocellus ; pronotum more rarely tuberculate ; abdomen in $ not 

 compressed at apex ; metathoracic spines not 



long Ampulex, J urine. 



North American Species. 

 Family XXVI. — AmpuHcid(E. (i) R. canaliculata. Say., ^$. 



Subfamily I. — Dolichiirince. = Abbottii, Westw. 



(i) DoLiCHURUS, Latreille. (2) R, maculicornis. Cam., ?. 



(2) Trirogma, Westwood. Waagenia, Kriechbaumer. 



(3) Aphelotoma, Westwood. Chlorampulex, Saussure. 

 Subfamily II. — AmpuliciiuB. Ampulex, Jurine. 



Rhinopsis, Westwood. (i) A. angusticollis, Spin., $, 



