TORTRICINA. 209 



brown at the base ; dull drab at the apex. Anterior wings glossy, 

 pale golden brown, merging into rich chocolate on the dorsal margin , 

 where is a very broad, curved, produced and obliquely-directed white 

 streak, having a brown line dividing it along the middle. The costa 

 is marked throughout with produced geminated streaks of a lustrous 

 white colour, and chocolate interspaces : the posterior portion of each 

 gemination produced into metallic -lustred lines, all directed towards 

 the apical margin ; the apical spot more or less surrounded ante- 

 riorly by the last of these. At the anal angle are two bright silvery- 

 lustred streaks, diverging in their course ; the space between them 

 ochreous, and marked with longitudinal black lines. Apical scales 

 umber, interrupted below the apical spot by a white streak running- 

 through them and the cilia. Cilia glossy drab, paler at the apex 

 and at the anal angle. Posterior wings at base pearly white, merging 

 into pale fuscous at the apex and margin. Marginal scales pale 

 fuscous, with straw-coloured bases. Cilia white, glossy. Abdomen 

 glossy umber ; the apex grey. Exp. al. 5|6 lin. 



An uncommon species, but tolerably constant in size and 

 colour. Larger than S. internana, and further distinguishable 

 from it by the dark, rounded patch on the dorsal margin, beyond the 

 crescent-shaped streak. It is nearer allied to the following spe- 

 cies (S. Leplastriana] , but is smaller, and has not the costal half 

 of the anterior wings ochreous. 



The imago appears in May and June, in grassy places in 

 Woods. It occurs at Daren th and Birch Woods, Wimbledon 

 Common, in Gloucestershire, Cheshire, and in the north of Eng- 

 land, but more frequently in Scotland. It has also been taken 

 at Raheny, county Dublin, in Ireland. 



According to Tischer, the larva feeds on Orobus niger (the 

 Black Bitter Vetch) ; he states that plant to be its especial 

 food. 



7. Leplastriana, Curt. Alis anticis ad costam laete ochraceis, ad 



dorsum albidis, strigis obliquis numerosis fuscis ; striga dorsali 



curva punctisque costalibus albis ; macula ocellari angulo anali 



ochrea, lineolis tribus longitudinal ibus atris; posticis fuscis. 



rf Exp. al. 6-6| lin. 



Head dusky drab, paler behind. Face darker than the head, in 

 some aspects shining, with, a coppery lustre. Eyes black. Palpi as 

 long as the head, white, with the apex fuscous ; the apical joint 

 umber. Antennae fuscous. Thorax mottled, dusky drab. Patagia 

 paler and glossy. Anterior wings slightly glossy. The ground- 

 colour of the costal half of the wing is ochreous, of the dorsal half 

 drab ; the costa is obliquely streaked throughout, the interspaces 

 umber ; the streaks just before the middle, and beyond, are white. 



P 



