18G7.] ]77 
This circumstance had passed from my memory wheu, a short time 
since, Mr. Meek brought me, for identification, inter aliis, a pair of this 
Tortrix, which revived my recollection of the occurrence, and still more 
strongly impressed me with the idea of its distinctness from alpinana. 
At this time Mr. Stainton, who, by-the-bye, perfectly coincided with 
my opinion in the matter, being about to pay a visit to Mr. Doubleday, 
I placed Mr. Meek's ^ example in his hands for the purpose of showing 
to that gentleman. 
A visit to Epping still further corroborated our views, for Mr. 
Doubleday had not only already separated this insect from D. alpinana 
in his cabinet, but agreed as to its being specifically identical with the 
specimen which Mr. Stainton placed before him. 
Although Mr. Barrett's (^ example (still bearing the ticket 
" alpinana ? " by the way) differs from Mr. Meek's ^ , in having the 
dorsal patch broader and less curved (more as in alpinana in point of 
fact,) while in the latter that mark partakes of the character of that 
of Petiverella, I have no hesitation in expressing my belief that they 
both pertain to one and the same species. 
Mr. Meek's specimens (a (^ and a $ ) were taken last August 
amongst Artemisia maritima in North Devon, Mr. Barrett's (a ,^ and 
3 ? ) were beaten from a hedge near Haslemere ; I am unaware of the 
locality in which Mr. Doubleday's example (a (^ ) was captured. 
Kentish Town, November 25th, 1866. 
A MONOGRAPH OF THE BRITISH PSOCID^. 
BY B. m'lACHLAN, F.L.S. 
As a second instalment* towards monographing the British species 
of the families included in the Linnsean order JVettroptera, I offer de- 
scriptions of the genera and species of PsocidcB. These small insects 
have been much neglected. Various writers of the seventeenth and 
eighteenth centuries noticed Atropos in the Philosophical Transactions ; 
but it was not until 1815 that the family was instituted, when Leach 
published an outline of it in the Edinburgh Encyclopoedia (article 
"Entomology"). In 1836, Stephens described the British species 
(which he appears to have assiduously collected) in the sixth volume of 
his " Illustrations " (Mandibulata), and divided them into groups ac- 
cording to the neiu-ation ; but in several instances the types in his col- 
* The Triclioptera are already done, and I hope soon to imblish, in another place, the British 
Hemerobida and allied families. 
