1911] Notes on African Myrmeleonidce 5 



and it has an inner projection toward the median band; a transverse, 

 preapical band, connected each side around the tip and thus enclosing 

 a hyaline spot. 



Expanse 80 mm. 



From Willowmore, Cape Colony, 20 Febr. (Dr. Brauns). 

 Similar to P. damarensis McLach., but with more slender wings; 

 the forepair with spots all over the surface, not clear between 

 the median and stigmal bands. (Banks coll.) 



Acanthaclisis Rambur. 



This genus is related to Myrmeleon, but distinguished by the 

 very heavy legs, and the much curved or rather geniculate 

 spurs; the body and legs are extremely hairy; the antennae are 

 rather close together at base ; the wings in most forms have a line 

 through the apical part of the wings formed by the bending of 

 the branches of the radial sector, and there is a similar line 

 through the cubital area formed by the bending of the branches 

 of the upper cubitus. 



Type — A. occitanica. 



The genus Syngenes formed for A. debilis Gerst, is scarcely 

 more than a subgenus; it has many of the costal crossveins 

 crossed.* The genus Centroclisis is, I think, a synonym of 

 Acanthaclisis, its type species agreeing closely with my speci- 

 mens of A. distincta. 



Quite a number of species have been described from Africa; 

 Dr. Van der Weele examined Gerstaecker's types and placed 

 most of them as synonyms of other forms; I have seen only a 

 few of the species, and the following table is based partly on 

 the descriptions. 



1. Costal area with many of cross veins crossed (Syngenes) longicornis 



Costal area with most of cross-veins simple or forked 2 



2. A black streak through middle of fore-wings lineatipennis 



No black streak in fore-wings 3 



?>. Spurs evenly curved dasymalla 



Spurs geniculate 4 



4. Fork of cubitus with a distinct spot mashunensis 



Fork of cubitus unmarked 5 



5. Various patches of white cross-veins in both wings; many small dark dots; 



larger ones along upper edge of cubitus, especially at end gulo 



Few patches of white cross-veins; less marked with dark, wings rather more 



acute at tips 6 



G. — Costal series almost all simple; pronotum not so plainly lineate with black. . 



distincta 

 Costal series mostly forked; pronotum very distinctly lineate with black. . 



baetica 



* A. americana, A. fallax have many costals forked; .4. japonica, A. horrida, 

 and some Australian species have many costals crossed. 



