a Family of the Hymenoptera Heterogyna. 195 



unless by actual observation, that it does or does not belong to this 

 genus, and what its sex may be — and when may we hope for this ? 



In the absence of such direct testimony, and of any insect that may 

 be more consistently united with this little female as its legitimate 

 partner, I shall not hesitate continuing to consider my conjecture 

 of their identity as correct, particularly as it seems confirmed by the 

 structure of the palpi in all. 



I shall here therefore terminate these general observations, and 

 proceed with the Monograph, premising that I have found it neces- 

 sary throughovit to give ample specific descriptions to prevent the 

 possibility of mistake. I consider the position of the family in the 

 system will stand thus : 



HETEROGYNA. Late. 



SociALES, Latr. 



Formicidae, &c. 

 Parasitica*;? Shuck. 



Dorylidae, Halid. 

 SoLiTARi^, Latr. 



Mutillidae, &c. &c. 



Family Dorylidae, Haliday. 

 DoRYLiDA, Leach.* 



Char. Head transverse, small. 



Eyes and ocelli largo and prominent. 



Antenna setaceous, not geniculated. 



Mandibles edentate, forcipate. 



Body elongate, cylindrical ; superior wings with two or three submarginal 



cells and one or two recurrent nervures : one calcar to all the tibitc. 

 Abdomen with the basal segment usually smaller tban the following, from 



which it is separated by a deep incision. 



Table of the Genera. 

 One recurrent nervure : 



Three submarginal cells 1. Labidus, /mWhc. 



Two submarginal cells 



Femora cylindrical 2. ^Enictcs, Shuck. 



Femora compressed 3. Dorylus, Fab. 



Two recurrent nervures 4. Rhogmus, ^Amc*. 



I have arranged the family according to what I consider their most 

 * In Brewster's Encyclop. Art. Entomology. 



