TORTRICINA. 211 



A single specimen of this insect is in the cabinet of Mr. H . 

 Doubleday, which was captured several years ago in Devonshire, 

 in June. No other British example is known. On the Conti- 

 nent this species is captured among Fir-trees. In size and 

 general appearance it resembles S. dorsana, but is darker in 

 colour ; the dorsal blotch is tooth-shaped, with a mark therein, 

 instead of quadrant- shaped and immaculate, as in the latter 

 species. 



9. dorsana, Fabr. Alis anticis nitidis olivaeeo-brunneis ; striga 



louga curva dorsali ; strigulis quinque geminatis costalibus albis ; 



posticis basi margaritaceo- albis, postica apiceque fuscis. <5 Exp. 



al.Tlin. 



Head in front drab, behind olive-brown. Face drab. Eyes black. 

 Palpi as long as the head, white. Antennae dark fuscous. Thorax 

 and patagia glossy oh' ve -brown. Anterior wings very glossy, rich 

 olive-brown, with five silvery-white geminations on the costa, and a 

 clear similar-coloured quadrant- shaped blotch on the dorsal margin : 

 the former are situated, one before, and four beyond the middle ; the 

 latter originates beyond the middle of the dorsal margin, and curves 

 posteriorly ; its apex truncate. The geminations beyond the middle 

 of the costa are produced into lustrous blue curved streaks. At the 

 anal angle is an obscure ocelloid patch, bounded by two broad, lustrous, 

 pale violet-coloured streaks, and marked longitudinally with three 

 or four black lines. Apical scales and cilia olive-brown. Posterior 

 wings glossy, the base pearly white ; the margins merging into um- 

 breous fuscous, darkest exteriorly. Marginal scales fuscous, with 

 the bases whitish. Cilia whitish. Legs fuscous. Abdomen glossy 

 olive-brown ; the apex drab. 5 Exp. al. 8 lin. Anterior wings 

 like the S ; posterior wings not so widely pearly white. 



A very rare species, not variable, and in but few cabinets. It 

 occurs in Scotland and in the north of England. In size the 

 same as S. interruptana, but readily distinguished from it by the 

 immaculate quadrant-shaped dorsal blotch, and by the pearly lustre 

 of the base of the posterior wings. 



Genus VIII. ASTHENIA, HUBNER ? 



Antennae stout in the cJ , much slighter in the $ . Palpi as long 

 as the head, remote, rather sparingly clothed with scales. Basal 

 joint pyriform, curved, ascending, truncate ; apical obovate, as long 

 as the basal ; middle ascending, isometric, curved, not stouter than 

 the basal, and twice the length of the apical ; maxillae not so long as 

 the palpi. Thorax robust, ovate. Anterior wings : length more 

 than twice the width. The costa slightly and regularly arcuated. 



