THE CANADIAN ENTOMOLOGIST. 69 



6. The cells basad of radial sector crossed and irregular ; a double 

 series of costals almost to the base ; radial sector in hind wings 

 arising before the origin of cubital fork Calinemurus. 



Cells basad of radial sector rarely crossed, not irregular ; rarely a 

 double series of costals before the middle of wing ; radial sector of 

 hind wings often arising beyond origin of radial 



sector Brachynemurus. 



Acanthaclihs, Rambur. 



Our four species of this genus differ somewhat in structure, yet I 

 hardly think sufficiently for a new genus. In A. congener the fork of the 

 cubital does not run into the anal vein of hind wing as in A. fallax. 

 The very stout legs are characteristic of this genus. 

 Myrmeleon, Linne. 



In our forms there are two groups of species, those allied to M. 

 riisticus and those near /]/. ii/nnac/ilaius. The species are very close to 

 each other and difficult of separation. 



Fsattrmoieon, new genus. 



One series of costals ; radial sector arising near the middle of wing, 

 the anal sector ending before its first fork ; seven or eight transversals 

 basad of radial sector in fore wing, but one in hind wings ; in hind wings 

 the anal vein runs close to the fork of cubitus and then turns away ; hind 

 wings narrow, as long as fore wings ; palpi short, last joint of labials 

 swollen ; antennse as long as head and thorax ; prothorax about as broad 

 as long ; legs rather short and hairy ; first tarsal joint of leg I. short, the 

 spurs about as long as the first four joints together. 



Type F. ingeniosus. Walk. 

 Glenuriis^ Hagen. 



Our one species, G. grati/s, is very easily known by its beautiful 

 markings ; the slender legs and antenna readily separate this genus from 

 the others of this section. 



De?idroleo?i, Brauer. 



Wings broad near tip, both pairs maculate ; anal vein of fore wings 

 ending slightly beyond origin of first fork of radial sector ; about four 

 cross veins basad of radial sector ; cubital fork of hind wings short, soon 

 bent down to anal vein ; prothorax slender ; legs very slender, anterior 

 tarsus much shorter than tibia. But one species, D. obsoleiuiii, Say. 



