404 PREDACIOUS AND PARASITIC 



Family He7nerohiid(E. 



Genus Osmylus (i species). — O. Chrysops^ a pretty brown 

 insect, with the wings spotted with black. It is met with in the 

 month of June, and seems to prefer stony, rapid streams, fringed 

 with alders. The larva lives partly in water. In this genus there 

 are ocelli visible. 



Genus Chrysopa (15 species). — In this genus the ocelli are 

 wanting. The larva feeds on aphides. 



Genus Sisyra (2 species). — The larva lives in water, and has 

 been described by Westwood under the name of Bratichiosioma 

 spongillcB. 



Genus Micromus (3 species). 



Genus Hcmerobius (7 species). — The larvae of the species of 

 this genus preys on aphides, and clothes itself with the empty 

 skins of its prey. 



Genus Drepaiwpteryx (1 species). 



Genus Coniopteryx (3 species). — These are small and covered 

 with a white mealy powder. The larvae live in fir trees, the 

 aphides frequenting which are their food. 



Mr. W. S. Dallas removes the Dragon flies to the Orthoptera^ 

 and arranges his Neuroptera as follows : — 



Order, NEUROPTERA. 



Sab-Order, Planipennia. 



Families. — Megaloptera (including sub-family Hemerobiidce), 



SialidcB (Alder flies). 



PanorpidcB (Scorpion flies). 

 Sub-Order, Trichoptera (Caddis flies). 



Mr. Dallas describes the Hemerobiidcb as having " antennae 

 either thread-like or necklace-like and not clubbed." 



Chrysopa he describes as a delicate green insect, about half-an- 

 inch long, with gauzy wings traversed by a most delicate network 

 of green veins. The prominent eyes are of a beautiful golden 

 colour. 



Mr. R. McLachlan, in his " Monograph of the Neuroptera^''' 

 published in the Transactions of the Entomological Society for 1868, 

 classifies the Neuroptera Planipennia as follows : — 



