THE CANADIAN ENTOMOLOGIST. 219 



the clypeus ; clypeus very short, not triangularly acute ; anten- 

 nal sockets somewhat distant from each other, but still wider 

 from the eye margin than to each other ; third antennal joint much 

 shorter than the fourth, the latter being the longest joint ; abdomen 

 marked with yellow, the pygidium in 9 narrow, somewhat length- 

 ened Brachymerus, Dahlb. 



=:Tracheliodes, Morawitz. 

 i^Fertonius, Perez. 

 [Type B. megerlei, Dahlb.] 

 Face narrowed below, the eyes convergent towards the clypeus ; 

 ocelli subtriangularly arranged ; clypeus anteriorly medially pro- 

 duced, the angles of same acute ; antennal sockets nearer to the eye 

 margin than to each other, but still close together ; third antennal 

 joint not longer than the fourth, but shorter than the second or 

 pedicel ; mesopleura not bounded by a carina posteriorly ; metanotal 

 area smooth, with some short striae at base ; abdomen clavate, not 

 marked with yellow, the pygidial area triangular, rounded at apex ; 

 antennae m (^ 13-jointed, normal, none of the jonits emarginate or 

 compressed ; mandibles with a large tooth or process beneath near 



the base AUiognathus, Ashm., n. g. 



[Type C. occidentalis, Fox.] 



Abdominal petiole clavate, subglobosely swollen at apex 4. 



Abdominal petiole subclavate, or very gradually thickened towards 

 apex, never subglobosely swollen at apex. 

 Mesosternal suture wanting or indistinct. 



Head obtrapezoidal ; eyes pyriform, convergent anteriorly to- 

 wards the clypeus ; ocelli arranged in a regular triangle ; body 

 feebly coriaceously opaque ; recurrent nervure in front wings 

 received by the cubital cell at about the middle ; pygidium 



triangular, punctate, distinct Microcrabro, Saussure. 



[Type M. micromegus, Sauss.] 

 Head similar, but larger, a little longer than wide, the temples 

 very broad ; superorbital fovese sharply defined, linear ; 

 ocelli arranged in an equilateral triangle, and rather widely 

 separated ; a strong spine between bases of antenna? ; head 

 and thorax somewhat coarsely, rugosely punctate ; recurrent 

 nervure in front wings received by the cubital cell a little 

 before the middle ; pygidium triangular, flat ; antenni« in ^ 



