TORTRICINA 173 



9. umbrana, Hub. Alls anticis brunneis aut ferrugineis ; striga 

 ramosa a basi ad apicem brunnea obscura, punctis elevatis sparsis ; 

 posticis nitidis fusco-griseis. tf Exp. al. 10 lin. 



Head and face umber-brown. Eyes black. Palpi : above, at the 

 sides, and beneath, umber-brown, paler between. Antennae umber- 

 brown, paler beneath. Thorax and patagia umber-brown, smooth. 

 Anterior wings of a satiny appearance, pale umber, with an intense 

 umber- coloured streak running from the middle of the base to the 

 apex ; broadest shortly after its commencement, somewhat inter- 

 rupted in the middle, and slightly rayed towards its termination. 

 Along the course of this streak are three tufts of pale-umber ele- 

 vated scales, one below it, near the base, which is also the largest ; 

 the second in the middle above; and the third towards the apex, 

 below. There are also two other similar- coloured tufts near the 

 dorsal margin, towards the anal angle, and several minute ones may 

 be traced at various parts of the wing. The apical margin well 

 denned, and slightly darker than the ground-colour. Apical scales 

 pale umber, tipped with greyish. Cilia slightly darker, and merging 

 into iron-grey at the anal angle. Posterior wings very pale fuscous, 

 shining, almost with a pearly lustre. Marginal scales paler and 

 shining. Cilia slightly darker. Abdomen fuscous, darkest towards 

 the apex ; the caudal tuft shining, and rather ferruginous in colour. 

 5 Exp. al. 9 lin. Anterior wings coloured, marked and tufted like 

 the tf ; the central streak, however, is less distinct, and more rayed 

 in its course. 



Like its congeners, it varies much ; but it is always of sombre 

 hue, never departing widely from the type. In general appear- 

 ance it much resembles some of the darkly- coloured, obliquely- 

 striated varieties of P. Hastiana. 



The imago appears from August to October, but is far from 

 common; it occurs chiefly among Blackthorn, on which the 

 larva most probably feeds. Coombe Wood, the New and Whit- 

 tlebury Forests, also Sanderstead and Mickleham Downs, are 

 recorded as localities. It has also occurred in Ireland. 



10. cristana, Schiff. Alis anticis saturate fuscis vel hepaticis ; me- 

 dio fasciculo squamarum elevatarum ; vitta lata ad marginem 

 dorsalem, punctisque apicem versus, elevatis niveis ; capite palpis 

 thoraceque niveis ; posticis fusco-griseis. c? Exp. al. 91 lin. 



Head snow-white, slightly greyish in front. Face white with a 

 fuscous irroration. Eyes brown. Palpi white with a fuscous irro- 

 ration above, rich ferruginous at the sides and beneath, with the base 

 yellow, between dirty white. Antennae dark brown. Thorax and 

 patagia snow-white, the bases of the latter chocolate-brown. An- 

 terior wings chocolate-brown, with a snow-white vitta on the dorsal 

 margin ; at the centre of the wing is a large snow-white tuft of ele- 



