16 OBSERVATIONS ON TINEINA. 



1 managed to collect a good supply." Mr. Brown also 

 enclosed me a mined leaf, saying, ** I went yesterday to our 

 fen and found the enclosed in profusion everywhere. I in- 

 tend going again at the end of this week, and will send you 

 a bountiful supply." I thus found myself in a position to 

 distribute amongst others the much-coveted larvae of Cos- 

 mo'pteryx Lienigiella^ and as still there were no tidings of 

 any coming from Stettin, I sent some Cambridgeshire larvaa 

 to Stettin, thus completely reversing the intended order of 

 things. 



Moreover I soon received a further supply of living larvae 

 from Baron v. Nolcken, and eaily in October came a most 

 bountiful store of them fiom Mr. Thomas Brown of Cam- 

 bridge. 



The larva mines flat elongate blotches in the leaves of 

 Arundo Phragmites. The excrement is generally collected 

 at the lower end of the mine, sometimes a little is exserted. 



The larva I have thus described : — 



Length 4 lines. Dull whitish, with a very faint rosy 

 tinge; head black; second segment with a large black sub- 

 cutaneous mark, divided in the centre; segments Avell incised. 

 A young larva was more of a dull yellowish, with indica- 

 tions of a faint reddish transverse band on each segment. 



The larva when full fed spins a slight cocoon within the 

 mine, but some lime elapses before the pupa state is assumed. 



Cosmo'pteryx orichaUeay Stt. The week befoi-e the Hon. 

 Thos. De Grey found the larvae of C. Lienigiella, he had 

 met with some of the grass-mining larvae of C. orichalcea 

 near Merton. I am not however able to report the name of 

 the grass in which they were feeding. 



Batrachedra prcEangustaj Haw. When at Exeter in 

 August, Mr. Parfitt showed me a moth he had bred from a 

 Lepidopterous larva he had found in a Tentliredinous gall on 



