136 THE CANADIAN ENTOMOLOGIST. 



Tribe II.— Notocyphini. 



Differs from the Chirodamini by the different shaped head, the long 

 eyes, which extend to or nearly to the base of the mandibles, by the long 

 tarsi, by the slenderer anterior femora, and by the different venation of the 

 wings. 



In the insertion of the antennas the group comes nearest to the 

 Aporince, to which it is unquestionably closely allied, but from that group 

 it is at once separated by the prominent, free labrum and by the absence 

 of a tarsal comb in the females. 



The group is evidently parasitic, and possibly some of the genera 

 defined in the Aporince, without a tarsal comb, will ultimately be removed 

 to this tribe. 



Table of Genera. 



i. Third cubital cell very large, and along the cubitus very long, longer 

 than the second ; labrum long, trapezoidal, much longer than wide ; 



ct antennas normal Notocyphus, Smith. 



(Type N. laevissimus, Smith.) 

 Third cubital cell triangular, smaller than the second ; labrum semi- 

 circular, wider than long ; <$ antennas 



crenulate Allocyphonyx, Ashmead, g. nov. 



(Type Pompilus maurus, Cresson.) 



Subfamily VI. — Ceropalinre. 



The Russian hymenopterologist, Gen. O. Radoszkowsky, was the first 

 to correctly define the group. He called it a family in 1888. 



In 1894, Mr. Wm. J. Fox, of the Philadelphia Academy of Sciences, 

 probably from ideas derived from Radoszkowsky, treated it as a tribe. 



It is unquestionably a natural group, differing in habits and many 

 salient characteristics from all of the groups here recognized. The 

 emarginate eyes, free labrum, straight antennas, short pronotum, etc., as 

 well as the characters of the male genitalia, as figured by Radoszkowsky, 

 readily distinguish the group. 



The species are parasitic in the nests of other Ceropalids or 

 Pompilids. Benjamin D. Walsh was the first to demonstrate the parasitic 



