DOLta.ASlA. 17'.> 



'i'hrce closely-alliccl British s])ecie.s arc known in tiiis genus; 

 iliey lly in the hot sunsliine, and when tliey alight on a h'af viiu 

 nimbly on it, frcciueiitly making short jerking movements. The 

 position of the wings in repose is rather peculiar, as tlu^y form a 

 very acute angle at their union over the back, as in CUix spimda. 

 None of the larva) have yet been discovered. 



1. sericiellum, ITaw. L. J5. 585 (182'J); Stop. — melalliceUa, Hif T7T 

 Pup.; Zcll. ; 1". V. R. pi. St. i". 2. — Alis auticis nitichs ;uiico-i>Tiseis, ^J^"— i-- 

 macula parva dorsi propc liasim, iiiaciilaque Viuijare dovsi pone nicdimu ^'''^ 

 albidis. Exp. al. oi lin. 



Head, face, and palpi dark giTeiush-bronzc. Autcima^ dark fuscous. 

 Anterior wings shininp^, bronzy-grey, with a small whilisli s]K)t on the 

 inner margin near the l)asc, and a large one beyond the middle of the 

 inner margin ; cilia pale bronzy-grey. Posterior wings violet-grey, 

 with pale grey cilia. 



Abundant among oaks in May. 



2. Stanneellum, F. v. R. 215. Anni. (18 tO); Sta. Alis antieis 

 nitidis dilate a^neo-griscis, macula ohwlela dorsi pone medium albida. 

 Hxp. al. 2i-3 lin. 



Head, face, and palpi pale bronzy-grey. Antenna:: dark fuscous. An- 

 terior wings shining, pale bronzy-grey, with wfahit whitish spot on the 

 imier margin beyond the nuddle ; cilia pale bronzy-grey. Posterior 

 wings violet-grey, with pale grey cilia. 



Occurs, with the preceding, among oaks in J\Iny, but less 

 abnndant. 



3. resplendellum (Pougb), Sta. Sup. C^at. ]). (5. 1851. — mHalU- 



cella, Sta. Alis auticis nitidis ■saliiratmiine ameo-griseis, macula parva (Tip IV.. 1*1. 

 dorsi pi"opc basim, maculaque majore dorsi pone medium (illji-s. b'.xp. I 



al. 2i-3 lin. 



Head, face, and palpi daik bronzy-grey. Antcima; dark fuscous. 

 Anterior wings shining, venj dark bronzy-grey, with a small white spot 

 on the inner margin near the I)ase, and a larger white spot on the inner 

 margin beyorid the middle ; cilia bronzy-grey. Posterior wings violet- 

 grey, with paler cilia. 



Taken at West Wickliam, J)artf()rd lleatli, and near Bristol, 

 towards the end of June, among oaks. 



GcmisVlI. DOUGLASIA. (P^-YT ^''' 



Caput tevigatum. Ocelli uuUi. Anteimic cra^^iuscuhc, alarum ante- 

 riorum diiiiidium superautes. llaustcUum nudum. Palpi labiales 

 subpcnduli, squamis incrassati, apicc obtuso. Aliie longc ciliatsc, 

 antcriores c/ow^ifte, posteriovcs acuitunatcc ; antcriores : cellula dis- 



