264 LEPIDOPTERA. 



the wing; liind margin and cilia clouded witli grey-biown. 

 Hind wings and their cilia smoky brown. Female similar, 

 fore wings a very little broader. 



Underside of the fore wings smoky brown with pale 

 brown costal dots. Hind wings smoky white. 



Mr. A. Thurnall has just secured a most lovely variety, of 

 which the ground-colour is clear white and the marking 

 black and e::ceedingly sharp and distinct. 



On the wing in June and July. 



Larva and Pupa unknown to me. 



Not at all a well-known species here. Said to hide in 

 shrubs during the day, or to sit upon tree-trunks. Flying 

 at night and occasionally coming to a strong light. 

 Apparently first noticed here about the year 1868, when 

 specimens were exhibited at the Meeting of the Entomo- 

 logical Society (April 4, 1869) by the late Mr. F. Bond. 

 These were taken at Wicken Fen, in the County of Cam- 

 bridge. This and the adjoining County of Huntingdon 

 seem still to be its principal localities, though casual 

 captures are reported in Oxfordshire, Hants, and Suffolk, 

 and Mr. A. Thurnall has just obtained it on tlie chalk 

 downs of Surrey. Its range abroad is uncertain, the records 

 being mixed with those of other forms, but the late Mr. E. L. 

 Ragonot informed me that it was common near Paris sitting 

 upon tree-trunks, and noticeable from the length of its 

 wings. 



(). S. chrysantheana, Dui). ; alteruella, JF/rt-. — 

 Expanse f to | inch (18-22 mm.). Fore wings broad, dull 

 grey, with grey-black notched bands. 



Antennae, palpi, head, and thorax dull grey- brown ; 

 abdomen silky pale brown. Fore wings broad, apex bluntly 

 rounded ; dull greyish umbreous with obscure darker grey- 

 brown markings ; basal blotch incomplete — a broad bar 

 from the costa bent into a knee upon the median nervure ; 

 central band narrow, irregular, represented mainly by its 



