34 NEUROPTERA. 



Length of the body 1 J — 2 lines ; expansion of the wings 



6 lines; setae $ 3i, ? 2| lines. 

 Sub-imago dirty yellowish-grey, with the tip of the ab- 

 domen darker in the male; caudal filaments grey; 

 legs yellowish ; wings dull grey. 

 Habitat near London ; June. 

 The description is made from Prussian specimens, which 

 I had labelled according to the types, and from English spe- 

 cimens. The description does not appear to refute the 

 identity of the species of Stephens. 



5. C. BiocuLATUM, Linne ; Pictet, Ephem. 244,1, tab. 34, 

 35 ; C. alhipemie, Stephens, 69, 4, $ mago ; C. 

 unicolore, Stephens, 69, 5, $ imago ; C. hyalinatum, 

 Stephens, 68, 3, $ imago. 



Imago. Head and thorax shining fawn-colour; turban 

 of the eyes red ; abdomen snowy-white, the three last 

 segments yellowish-brown ; caudal filaments white ; 

 anal forceps pale yellow, the basal joints very broad ; 

 legs white, the anterior yellowish ; wings hyaline, the 

 longitudinal veins pale yellow ; the apical part of the 

 marginal field with some wavy transverse veins, 

 between which ai-e the rudiments of other veins, still 

 more irregular; posterior wings very small. 



Female unicolorous, yellow ; the tips of the abdominal 

 segments brownish ; caudal filaments white. 



Length of the body $ 2f , $ 2| lines ; expansion of the 

 wings i 7, 9- 7 1 lines; setae ^ 4|, $ 2^ lines. 



Sub-imago unicolorous yellowish-grey ; the dull wings 

 yellowish-grey, paler in the female. 



Habitat near London. 

 The description is made from English specimens and from 

 Prussian specimens which have been compared with the 

 types. 



