OF WASHINGTON. 25 



3. Ocelli absent; femora clavate; metathorax posteriorly truncate and 



bounded by an elevated rim at apex; mandibles curved downward; 



claws simple JEnictus Shuckard 



(Type, 2E. ambiguus Shuckard) 



4. Eyes prominent, placed at the lateral middle of the head, the ocelli 



represented by a single ocellus anteriorly Oocercea Roger 



(Type, 0. fragosa Roger) 



5. Wingless; head oblong-quadrangular, much wider than the thorax; 



thorax more than thrice longer than wide, without sutures ; abdom 

 inal petiole quadrangular, longer than wide; antennae lo-jointed. 



JEnictus Shuckard 



6. Front wings with two cubital cells, the stigma distinct, the trans 



verse median nervure interstitial with the basal nervure or nearly, 

 the median and submedian cells equal or nearly; pygidium pos 

 teriorly rounded; antennae tapering off at apex, the intermediate 

 joints wider than long lEnictus Shuckard 



Subfamily II. DORYLIN^E. 



This subfamily reaches its greatest development in Africa 

 where the genera and species are numerous, although a few 

 extend into Asia. 



It may not occur in America, as the two American genera 

 placed here, namely Typhlopone Westwood and Cheliomyrmex 

 Mayr are unknown to me in nature and are placed here from 

 the description alone. I suspect that both may belong to the 

 Ecitoninse. Sphinctomyrmex Mayr is also another doubtful 

 Doryline which I have not been able to see. 



Two distinct tribes have been recognized from the males. 



TABLE OF TRIBES. 



Front wings with three cubital cells, the second receiving only one 

 recurrent nervure Tribe I. ^Enictogitonini 



Front wings with two cubital cells, the first receiving the single 

 recurrent nervure Tribe II. Dorylini 



Tribe I. ^ENICTOGITONINI. 



This tribe is based upon the genus /Enictogiton Emery, 

 known only in the male sex, the type being A. fossicans Emery. 

 The worker and female will probably resemble some of those 

 in the tribe Dorylini. 



Tribe II. DORYLINI. 



Africa is evidently the original home of this tribe, where 

 the genera and species are abundantly represented. Prof. C. 

 Emery, the eminent Italian myrmecologist, in his paper " Die 



