TRIFIDJE. 329 



it sitting late at night npon the large blades of the tall 

 masses of reeds in the fens. It seems to be quite indifferent 

 to the attractions of sugar. Though rare or very local in 

 some counties, and hardly common in any, it appears to 

 inhabit all the South, East, and West of England, and 

 many parts of the Midland Counties, extending to Yorkshire, 

 Lancashire, the coast of Cheshire, and that of Durham so 

 far as Hartlepool. It has also been taken in Scotland, in 

 Roxburghshire and elsewhere in the south, in Perthshire, 

 and ]\Ioray. In Wales the only record that I find is 

 near Swansea. In Ireland it has been found by Colonel 

 Partridge at Lough Erne and near Enniskillen — probably 

 it only requires to be looked for where poplar is common. 

 Abroad it has a wide range : — Central Europe, Southern 

 Sweden, Livonia, Northern Itah^, Southern Russia, the 

 mountain regions of Central Asia, and apparently some 

 portions of North America. 



2. T. retusa, Z. — Expanse 1^ to 1^ inch. Fore wings 

 pointed and sharply retuse, shining dark olive-brown ; trans- 

 verse lines oblique, direct, almost parallel, darker, but double, 

 and enclosing a paler thread ; upper stigmata pale margined. 

 Hind wings smoky -brown with white cilia. 



Antenna of the male rather short, thick, simple, coarsely 

 ciliated, brown ; palpi slender, diverging, pale grey-brown, 

 apical joint long ; eyes naked, deep black ; head tufted, and 

 having a distinct tuft at the base of each antenna, pale 

 purplish-brown ; thorax olive-brown, collar rather uplifted in 

 the middle, scales at the back drawn together into a single, 

 rather conspicuous, raised tuft, tipped behind with white; 

 fascicles smoke-colour ; abdomen olive-brown ; lateral tufts 

 spreading ; anal tufts long, rather depressed and channelled. 

 Fore wings sharply pointed and retuse ; costa faintly arched 

 near the base, thence almost straight ; apex acutely angulated; 

 hind margin below it considerably hollowed but filled out 

 and convex in the middle, rounded off below; dorsal margin 



