June, 1913] Banks: Notes on African Myrmeleonid^. 149 



NOTES ON AFRICAN MYRMELEONID^. 



By Nathan Banks, 

 Washington, D. C. 



The following, mostly synonymical, notes are based chiefly on a 

 study of types in several European museums ; I have gone over these 

 notes with the descriptions and my own material since my return. 

 There are other species upon which I failed to make sufficient refer- 

 ences or through lack of material in my collection am unable to verify 

 my suspicions of their synonymy. In a few cases a species described 

 by an old author has not been rediscovered, but it may be in some 

 cases that the locality label is a wrong one. 



Acanthaclisis. 



Navas has divided this up into a number of genera, several of them 

 on variable conditions of venation. The number of costals crossed 

 or forked varies so much that I fail to see how one can tell where 

 Sogra ends and Acanthaclisis begins. Paranthaclisis Banks (includ- 

 ing CcntrocUsis Navas) may be a subgenus as I have already placed 

 it, hardly more. 



I have seen the types of many of Navas' new species, but cannot 

 without more study of specimens decide on the validity of all of them. 



Sogra superba Navas. 



The type agrees with figure and description of Acanth. fcUna 

 Gerst. 



Sogra distincta Rbr. 



5". difficilis Navas, S. iiigrafa Navas, and S. perversa Navas are 

 this species ; probably others also belong here. The type expands 

 about 108 mm., and has four dark streaks between the median and 

 cubital veins. 



Sogra brachygaster Rbr. 



Myrmcleon gabonicits Fairm., and Acanth. riifescens Gerst., appear 

 to be the same ; Sogra infernalis Navas is evidently also a synonym. 



Sogra maillardi Selys. 



Sogra pertinax Navas and S. rixosa Navas, according to types, 

 are this species. 



