214 



EMMELESTA ALBULARTA. 



GRASS RIVULET. 

 Plate XXIX. Figure 3. 



THIS insect measures three quarters of an inch or a 

 little over in expanse. 



Male: fore wings silvery whitish grey, crossed by 

 several pale yellowish grey waved lines, with a central 

 band beyond the middle, through which runs a pale grey 

 line. Hind wings whitish grey, darker within the outer 

 margin. 



Localities for this species are York, Scarborough, 

 Glasgow, Isle of Man, Barnstaple, Kingsbury, Pembury, 

 Carron, Ullswater, Birkenhead, Manchester, Oxford, 

 Stirling, Edinburgh, Newcastle-on-Tyne. 



The situations where it is found are hedges in fields. 



The perfect insect appears in June, July, and the be- 

 ginning of August. 



The caterpillar is whitish-green, with a broad dark 

 green line along the back and another on the sides, head 

 brown. 



The date of the appearance of the caterpillar is in 

 August and September. 



It feeds on the seeds of the common yellow rattle 

 (Wiinantlius crista-gatti). 



The chrysalis is enclosed in a cocoon of earth. 



