132 LEPIDOPTERA. 



Underside of fore wings pale smoky brown ; of the hind 

 wings white shaded with brown — pure white in the female. 



Variable in both sexes in the presence or absence of a 

 broad, longitudinal, umbreous stripe from the base to the 

 end of the discal cell, or beyond ; where this is well marked 

 the oblique apical dash is usually equally distinct ; in its 

 absence the latter becomes more or less faint. An unusual 

 variety from the New Forest, in the collection of Mr. A. F. 

 Griffiths, is uniformly dark brown. 



On the wing from June till September. 



Larva grey -green, the hinder portion whitish-green ; 

 dorsal stripe dark green ; head black ; a pale angle and 

 black dots on the dorsal plate, which is divided by a whitish 

 line ; anal plate with two crescents, notched at the sides ; 

 feet yellowish. (Treitschke.) Young larvaj, hatched from 

 eggs sent to Mr. W. Buckler, are described by him "dark 

 greyish-brown, with black head and black plate on the 

 second segment." These young larvEe seem to have perished, 

 and no description more recent than that of Treitschke, 

 quoted above, seems to be available. 



Autumn till May or June, on Tou aqiudica, Arundo 

 jnhragmites and various Carices ; Treitschke says in Carcx 

 rolling the leaf together, in Arundo and Poa in the tender 

 shoots, when these are emptied biting off a portion to serve 

 as a case to be used in floating itself from one plant to 

 another. 



Pupa yellowish-white, tender skinned, cylindrical, with 

 brown eyes, long wing-covers, and elongated hind segments. 

 (Treitschke.) In a tough cocoon in the larva-case. 



The moth especially frequents ditches which are much 

 crowded up with water-plants, reeds, and coarse grasses, and 

 hides among them during the day. At dusk it flies in a lazy 

 fashion along these ditches, or the margins of rivers, and 

 even ponds, and may readily be attracted hy the light of a 



