38 THE ENTOMOLOGIST. 



with the help of a lantern ? Do they feed on the young 

 catkins, &c., &c. ? Any information will be most acceptable, 

 as the birch grows plentifully in some woods in this neigh- 

 bourhood. The perfect insect, I believe, occurs here, and I 

 am anxious to obtain the larvae. — Gervase F. Mathew ; 3, 

 Stopford Place, Stoke, Devonport, Fehruary 12, 1872. 



Correspondents will oblige me by replying in the * Ento- 

 mologist.' 



Colias Edusa in Yorkshire. — Please excuse my asking 

 why you did not give Yorkshire as a locality for Colias 

 Edusa in your ' British Butterflies ? ' Perhaps you did not 

 consider the evidence quite satisfactory ; but its occurrence 

 at Worsborough was genuine, as I saw the insects on the 

 setting-boards. They have not been seen since ; but I am on 

 the look out in the season. — Jos. Goodyear; Worsborough, 

 Barnsley, Fehruary 14, 1872. 



I can only account for the omission by supposing the 

 record altogether escaped my notice ; of course it ought to 

 have been inserted. 



Insect Perforating Lead. — A friend of mine, aware of my 

 love for Entomology, recently called my attention to a large 

 piece of sheet-lead from a neighbouring roof, which had 

 apparently been attacked by insects. The lead had been 

 removed in consequence of the water penetrating the roof; 

 and an examination of it proved that it had been bored in 

 small round holes, in the same way as we so frequently see 

 old timber pierced. There were, besides, some marks on the 

 lead reminding me of the mines made in leaves by certain 

 insects. My friend was of opinion that the mischief was done 

 by the same beetle that does similar damage to timber, 

 insects known in our local dialect as " woodloos." Perhaps 

 you, or some reader of the ' Entomologist,' can enlighten me 

 as to the cause of the above appearances. — W. Macmillan ; 

 Castle Cary, Somerset, February 16, 1872. 



1 have known lead to be perforated by a longicorn beetle 

 on its emergence from the pupa stale : these have on two 

 occasions proved to be Callidium Bajulus, and on one 

 occasion Callidium violaceum. The insect obviously does 

 this in its desire to escape and increase its kind, and not 

 with a view of converting lead into nutriment. In the present 

 instance 1 can give no opinion without seeing the lead, and 

 probably not even then. 



