the Biology of some British Neuroptera. 591 



devours its host, and later emerges, or, if in autumn, it 

 winters as a larva, pupating and emerging in spring. The 

 following Hymenopterous parasites have been found. 



Hemerohius micans 



Anacharis typica Wlk. 

 H. lufescens 



Anacharis typica Wlk. 

 H. stigma 



Anacharis ensifer AVlk. 

 From cocoon of H. stigma 



Gelis ruficornis Thbg. 

 Chrysopa flava 



Helorus coruscus Halid. 



Hemiteles aestivalis Grav. 

 C. alba 



Helorus coruscus Halid, 

 C. seplempunctata 



Helorus rugosus Thoms. (C. G.) 

 From Chrysopid cocoons under oak bark 



Mesochorus pectoralis Ratz. 

 Conwentzia psociformis 



Lygocerus sp. 



Calliceras (Ceraphron) sp. 

 From Conwentzia cocoon 



Rhizarcha senilis Nees. 



More details of the parasites bred out must appear later, 

 as many require separate treatment. 



Neuropterous larvae are preyed upon by many predacious 

 insects. Conwentzia larvae, as they swarm on the tree- 

 trunks previous to spinning, are killed in large numbers by 

 Chrysopid and Coccinellid larvae, and even when within 

 the cocoon, a Chrysopa larva will often suck the resting 

 larva or pupa. 



Literature Cited, 



1. Anthony, H. M., 1902. Biology and Anatomy of 



Sisyra. Amer. Nat., xxxvi, p. 615, 



2. Alderson, E. M., 1911, Notes on Chrysopa dorsaJis 



Bm-m. Ent. Mo. Mag., xlvii, pp. 49-56, 



3. Brauer, F., 1857. Neuroptera Ausiriaca Wien. 



4. Enderlein, G., 1906, Monographic der Conioptery- 



giden, Zool, Jahrb., xxiii, Abt. f. Syst., pp. 173- 

 242. 



