406 PREDACIOUS AND PARASITIC 



To assist in recognising these, I have availed myself of the 

 drawings, given by Mr. McLachlan, of the final segments of the 

 abdomen of the male in several species, and of both male and 

 female in one species. These will be found highly characteristic, 

 and entomologists are much indebted to Mr. McLachlan for plac- 

 ing at their disposal such definite features in so clear a manner. 



The ChrysopidcE the same naturalist has divided into two 

 genera : — 



I. — Chrysopa (Leach). 2. — Notochrysa (McLachlan). 



The genus Chrysopa comprises the following species : — 



Mostly green, often with black ) C. Flava (Scop.). 



markings - - -] C. vulgaris (Schneider). 



The genus Notochrysa consists of two species only, but these 



are remarkable for their colour : — 



Dark, reddish orange, black, ") iVi/^^/^^V^/>^ (Stephens), 

 fuscous, and yellow - -] N. capitata (Fabr.). 



The Cofiiopterygidce consist of one genus only [Co?iiopteryx), 

 and it includes but three species : — 



C. Psociformis (Curtis) ', 

 C. Tineiformis (Curtis) ; 

 C. Alcyrodiformis (Stephens). 



This is the most complete classification of the Aphis-eating 

 Neuroptera with which I am acquainted, and, save for some con- 

 fusion in the characters ascribed to the main groups, there cannot 

 well be a more satisfactory arrangement of the species found in 

 Britain. The larval forms are of great interest, and, being com- 

 paratively little known in many cases, offer an attractive field for 

 investigation to any observer who may have time and opportunity 

 to study their Hfe-histories. 



