THE ENTOMOLOGIST. 267 



expressed themselves satisfied and pleased with the exchange, 

 and in these instances it was found impossible to make a full 

 return owing to the few species desiderated. If the London 

 entomologists were to lake this matter of exchange up, with 

 a working committee of half a dozen or so, and some leading 

 entomologist as president, a really good club could be formed. 

 Should any such step be taken, we shall be most happy to 

 assist in any way that we can. — JosepJi Merrin; Gloucester. 



[This explanation or apology seems scarcely required. It 

 may be taken for granted that entomologists will not send 

 their best captures for distribution in this manner : the 

 quid pro quo^ or rather the two or three quids for one quo, is 

 the indispensible condition of exchangers; yet they will, 

 doubtless, be willing to send duplicates, for which there is 

 no more promising market. Mr. Merrin's statistics show this 

 in the most unmistakeable manner : *' out of 13,000 specimens 

 fully half were of little or no value, on account of their being 

 badly set or in bad condition." This is a matter of course, 

 and always will be so. Entomologists who offer to barter 

 Rapae for Daplidice, UrticaB for Antiopa, and so forth, as we 

 are apprised by the exchange lists, would scarcely be likely 

 to send their Daplidices or Antiopas to an exchange club. — 

 Edward Newman.^ 



Canary Tick. — Through the kindness of Mr. Whitehead, 

 of Blenheim Court, Dulwich, I have lately become acquainted 

 with an Acarus, which infests canaries and, probably, other 

 cage birds; it seems to travel principally by night, and may 

 be induced to quit the cage by covering it with a white 

 handkerchief. In the morning the ticks will be found dotted 

 all over the handkerchief. 1 am prepared to describe and 

 name this little mischief-maker, for so it may be called, as it 

 seems to be a sore plague to the canaries. 1 delay, however, 

 in the hope that some of my readers may be able to give me 

 their experience, and say whether they are acquainted with 

 the animal, and whether it has been characterised. — Edward 

 Newman. 



Extracts from the printed Proceedings of the Entomological 

 Society, February 6, 1871. 



Mr. Eedle's Scotch Lepidoptera. — Mr. Bond exhibited 

 several species of Lepidoptera taken in Perthshire, last 



