44 



LEPIDOPTERA. 



by the general dark ground colour of the basal portion of 

 the wing; only the basal half of the inner margin standing- 

 out as strikingly paler : there is no purple fascia before the 

 silvery fascia, and, as has been already mentioned, the silvery 

 fascia is far brighter and rather more slender than in either 

 of those. This insect is the solution of Enigma No. 17 

 (Entomologist's Annual, 1st Edit. 63 ; 2nd Edit. p. 86). I 

 met with the larva of this species in alder leaves near Becken- 

 ham, October 15th and 22nd, 1854; on the 18th of that 

 month I received some larvae of the same insect from Mr. 

 Thomas Law of Darlington. It is briefly mentioned in the 

 Natural History of the Tineina, vol. i. p. 24:i—"Alnus 

 glutinosa. A pale amber larva, making small irregular 

 galleries." 



From these larvae I bred last spring three specimens of 

 this very pretty addition of our Nepticulce, and Mr. Law 

 also bred a specimen or two. 



This last autumn I visited the alder bushes just too late, 

 so have no prospect of adding to my store next year. 



Pterophorus Zetterstedtii, Zeller. 



Expands 10| lines. Most nearly allied to P. trigonodac- 

 tylus, but much darker in colour; the lobes of the anterior 

 wings especially darker, and the tip of the anterior lobe 

 rather less produced ; the pale streak on the second lohe 

 keeps nearer to the hind margin. 



For this pretty addition to our Plumes, we are indebted 

 to Mr. Boyd, who took several at Lynmouth, North Devon, 

 in July. 



The larva, on the continent, is reputed to feed on Senecio 

 nemorensis ; this is not a British plant, but probably it feeds 

 here on some other species of Senecio. 



