THE CANADIAN ENTOMOLOGIST. 133 



Mesonotum very long ; front femora rather long and swollen, the 

 tibia stout ; claws with one tooth 



beneath Apteropompilus, Brauns. 



(Type A. tosquineti, Brauns.) 



2. Wings normal, when closed extending beyond the tip of the abdo- 



men 6. 



Wings more or less abbreviated, when closed not extending beyond 

 the tip of the abdomen, especially in the females, in g usually of 

 normal length 3. 



3. Mesosternum emarginate at the middle; second and third cubital cells 



very unequal, the third much the larger; cubitus in hind wings 

 originating beyond the transverse median nervure ; claws with a 



tooth near the middle beneath 5. 



Mesosternum not emarginate at the middle ; second and third cubital 

 cells large, nearly equal ; claws with a strong tooth at middle 

 beneath 4. 



4. Transverse median nervure in front wings interstitial with the basal 



nervure ; cubitus in hind wings variable, usually originating beyond 

 the transverse median ; clypeus separated at base by a delicate 



sutural line ; body not entirely black Parapompilus, Smith. 



= Micropteryx, Lepel. 

 (Type Pompilus brevipennis, Fabr.) 

 Transverse median nervure in front wings not distinctly interstitial, the 

 submedian cell a little longer than the median ; cubitus in hind wings 

 originating beyo7id the transverse median nervure ; clypeus very flat, 

 polished and not separated at base by a delicate sutural line ; body 

 entirely black or blue-black Pedinaspis, Kohl (pars.). 



5. Eyes bare ; hind tibiae not spinous, pubescent, and not or scarcely 



longer than the tibiae ; transverse median nervure in front wings 



interstitial with the basal nervure Epipompilus, Kohl. 



(Type Ferreola azteca, Cress.) 



= E. Maximiliani, Kohl. 



Eyes pubescent ; hind tibiae unarmed ; front femora rather stout, the 



tarsal joints 2-4 short, not longer than thick. ( $ unknown.) 



(Peru.) Aulocostethus, Ashm., g. nov. 



(Type A. bifasciatus, Ashm., MS.) 



6. Metathorax posteriorly obliquely truncate, impressed, the angles more 



or less acute 7. 



