192 TORTRICINA. 



angle, followed by a shorter one at the apex ; between these is a very 

 large ocelloid patch, which is clouded towards the costa with dull 

 umber, followed by a longitudinal white patch, then by numerous jet- 

 black freckles (largest in the middle) on an orange and white ground, 

 intermixed with bright lustrous blue spots, and a curved streak to- 

 wards the anal angle. The costa towards the apex marked with two 

 small cream-coloured spots. Apical scales umber. Cilia iron-grey. 

 Posterior wings and marginal scales umber, paler towards the base. 

 Cilia iron-grey. Abdomen glossy umber, the apex slightly paler. 

 $ Exp. al. 8-8| lin. 



Not a very common species : varies in size, but is constant in 

 colour. 



The imago appears in May, June, July, and August, among 

 Oaks. It occurs at Coombe, Darenth, and Greenhithe Woods; 

 at Hampstead, and other places round London , in the New Forest, 

 &c. ; also in Ireland. It seems attached to the common brake 

 Pteris aquilina, as it is frequently found settling on that plant ; 

 and it is by some practical entomologists supposed that the larva 

 may feed in the roots thereof. 



Genus IV. SEMASIA, STEPHENS. 



Palpi as long as the head, remote, ascending, densely clothed with 

 scales beneath ; basal joint drooping, elongate, stout, truncate ; 

 apical minute, oval, not so long as the basal ; middle ascending, curved 

 slightly, somewhat thicker beyond the centre, four times as long 

 as the apical. Maxillae as long as the palpi. Thorax robust, ovate. 

 Anterior wings : length equals twice the width. Costa regularly 

 arcuated ; apex obtuse ; apical margin rounded, dorsal margin 

 straight. The discoidal cell is situated in the upper half of the wing, 

 and does not extend two-thirds its length. The costal vein attains the 

 margin before the middle, subcostal nervures not always equidistant. 

 Posterior wings : apex subacute, apical margin very slightly concave, 

 dorsal margin entire. Abdomen moderately stout and tufted in both 

 sexes, suddenly acute in the $ . 



This genus is now somewhat increased in extent, in conse- 

 quence of its being necessary to find more natural locations for 

 such species as have been discarded from other groups, in which 

 they had been previously included, but which could not be re- 

 tained there, in consequence of their not bearing the folded costa. 

 The insects now associated together are of small size (S. Wceberana 

 excepted), but whether they will all ultimately maintain the po- 

 sitions now assigned to them, a more intimate knowledge of the 

 preparatory states and of the larvae will show. 



