106 TOttTRICINA. 



marginal scales glossy, golden brown ; the latter with their bases 

 dusky drab. Cilia drab, with a dusky line running round the middle. 

 Legs pale fuscous, and straw-colour. Abdomen glossy, pale fuscous ; 

 the caudal tuft drab. $ Exp. al. 7 lin. Marked like, but in colour 

 slightly darker than, the tf 



5. simpliciana, Haw. Alis anticis cinereo-fuscis, maculis nebu- 

 lisque fuscis ; macula margine dorsali indistincta et triangulari ; 

 strigulis costalibus pallidis ; posticis fuscis. <3 Exp. al. 6-7 lin. 



Head and face dusky drab. Eyes black. Palpi longer than the 

 head ; dull ochreous at the base, sides, and beneath. Antennae 

 dusky drab, glossy, paler beneath ; broadly dusky drab at the apex. 

 Thorax and patagia dusky drab ; the latter slightly paler at the apex. 

 Anterior wings dull, dusky drab, with a paler tint along the costa, 

 with a large, irregularly- trigonate dorsal blotch, slightly paler than 

 the general colour, and most clearly denned at its anterior edge. 

 The costa beyond the middle is marked with pale, oblique, gemi- 

 nated, produced streaks, and clear brown interspaces. The apical 

 spot large, but not conspicuous. Three black dots in the middle of 

 the apical margin. Apical scales chocolate -brown. Cilia glossy, 

 pale brown, paler bases, both interrupted beneath the apex by a 

 streak running through them. Posterior wings and marginal scales 

 fuscous ; darkest at the apex. Cilia glossy, fuscous grey. Abdomen 

 fuscous grey, with a paler caudal tuft. $ Exp. al. 6-J-7J lin. 



Not a common species ; tolerably constant in size and colour. 

 This is one of a group of insects which are exceedingly difficult 

 to make out. It is allied to D. Tanaceti, saturnana, and plumba- 

 gana. From Tanaceti it may be distinguished by the costa not 

 being so distinctly marked, and the entire absence of slightly 

 lustred streaks and markings on the disk; from saturnana by 

 its somewhat smaller size, paler colour, and obvious, though ob- 

 scure, blotch on the dorsal margin, and the absence of metallic 

 marks; and from plumbagana by the same characters as from 

 saturnana. 



The imago appears in June and July among Mugwort (Arte- 

 misia vulgaris], and occurs wherever that plant grows in plenty. 

 It has been captured at Charlton, Greenhithe, Northfleet, and 

 Margate, near Dover, in Kent, near Croydon, and other places 

 round London; also in Worcestershire, Cheshire, &c. 



The pupa measures 4 lines in length, and is of a pale testa- 

 ceous brown. 



The larva feeds in the roots of Artemisia vulgaris, living 

 therein throughout the winter, and assumes the pupa state 

 about the month of April. It is of a yellowish-white colour, 

 with a hazel-coloured head. 



