SOCIETIES. 
98 
dozen of earnest students of this group who would not deny — in book 
form — the results of long and careful research to their less experienced 
brethren, and there must be as many, or more, gentlemen willing — I 
believe anxious — to support the publication of such a work by qualified 
hands. Why should it not be a standard work ? Through the careful 
co-operation of micro-lepidopterists much might be achieved ; unity is 
strength, and accurate notes of individual species from past, present, 
and future working might be sent in monthly to a committee competent 
to arrange and select everything that would be permanently useful. 
This might be carried on for a couple of years without unduly rushing 
into print, or incurring any expense, meanwhile it could be ascertained, 
by means of the entomological journals, if a satisfactory number of 
subscribers could be obtained. It is within the power of the beginner 
to supply facts which the collector of half a century may have over- 
looked. In this way, a vast mass of information might be collected and 
sifted, and a book given to entomologists of the utmost value. General 
co-operation, guided and kept in hand by a committee, would obviate 
friction, and everyone might hope to contribute data for the good of all, 
and perhaps obliterate to a certain extent that tendency to secrecy, 
which may be regarded as the typical failing of the British 
entomologist. 
These crude remarks merely skim over an important subject, but 
they may serve to bring it to the front, and I shall be glad if they elicit 
the opinions of experienced collectors. Such a book as I advocate, 
compiled and published by the activity of many, would surely be of 
more value, and more easily carried into effect than any individual 
effort, however praiseworthy. — R. E. Salwey, Folkestone. May\ 1891. 
[I should be pleased to have practical suggestions from those, and 
only those, willing to help. Something definite might then be arranged. 
I think I could devise a satisfactory method of collecting, collating 
and arranging the information obtained. — Ed.] 
gOCIETIES. 
Entomological Society of London.— 1891. — Mr. E. 
B. Boulton exhibited living larvae of Endro7nis versicolor, and com- 
mented on their habits. Mr. W. F. H. Blandford called attention to 
the fact that the larvae of Liparis monacha remained in small groups on 
the bark of the tree for about a week after emerging from the eggs, 
and that this fact was taken advantage of by the German foresters to 
destroy them. Also that he had himself verified the statement that 
uric acid can be detected in the malpighian tubes of insects. Mr. 
M’Lachlan agreed that the demonstration that the malpighian tubes 
were of the nature of renal organs was now satisfactory. Mr. C. J. 
Gahan exhibited two species of Coleoptera that he considered to 
possess a mimetic resemblance. Mr. Tutt exhibited a hybrid between 
Amphidasys prodromaria and A. betularia, obtained by Dr. Chapman. 
Mr. Stainton commented on the fact that the two insects appeared 
at different times ; and Mr. Tutt stated that the A. betularia had 
been subjected to forcing, so as to cause it to emerge at the same 
time as A. prodrornaria. Mr. Tutt also exhibited forms of Caradrina, 
