SOCIETIES. 325 
could name almost any species of European Trichoptera simply from 
an examination of the detached abdomens of the males. Mr. Osbert 
Salvin said he had examined the genitalia of a large number of 
Hesperide, with the view of considering their value in distinguishing 
species, but at present he had not matured his observations. Mr. 
Jacoby, Mr. Bethune-Baker, Colonel Swinhoe, Mr. Lewis, Dr. Sharp, 
Mr. Hampson, and Mr. Champion continued the discussion. Mr. 
S. H. Scudder communicated a paper entitled ‘‘ New light on the for- 
mation of the abdominal pouch in Parnassius.’”’ Mr. Elwes said he 
had based his classification of the species of this genus largely on the 
structure of this abdominal pouch in the female. It had been con- 
sidered doubtful whether the fluid which formed this pouch was 
secreted by tbe female or the male, but he always thought that it was 
secreted by the latter, as after pairing the male frequently died from 
exhaustion. He was glad to find that Mr. Scudder had now proved 
this supposition to be correct. Mr. Jenner Weir remarked that a 
similar abdominal pouch was to be found in the genus Acrea; and Mr. 
Hampson referred to specimens, in Mr. Leech’s collection, of a male 
of one species of Parnassius taken in copula with a female of another 
species, in which the pouch peculiar to the species to which the female 
belonged had been formed. and, not fitting the claspers of the male, 
had come away from the female on the specimens being separated, and 
remained attached to the male.—H. Goss & W. W. Fowter, Hon. Secs. 
Sourn Lonpon EnromonoeicaL AND Naturat History Socirety.— 
Octoler 27th, 1892.—C. G. Barrett, Esq., F.E.S., President, in the chair. 
Mr. Hugh Main, of Kast Greenwich, was elected a member. Mr. 
Bristowe exhibited Zygena trifoliit, Esp., intermediate between the 
normal form and the yellow variety ; and a variety of Argynnis paphia, 
L., in which the spots had coalesced and formed streaks. Mr. 
Fenn, Tortrix rosana, L., from Aberdeen and Eltham, and remarked 
that there was some doubt as to the Aberdeen specimens being 
referable to this species, and Mr. Barrett said he considered them to 
be 7. rosana. Mr. R. Adkin showed Odonestis potatoria, L., bred from 
larve collected in Sussex, the series showing considerable variation ; 
he also called attention to the wings of some of the females being 
much scalloped, but still retainmg complete fringes. Some observa- 
tions were made by members upon the probable causes of this. Mr. 
Barrett exhibited two specimens of Nonagria concolor, Gn., one taken 
in the Yaxley Fen district thirty or forty years ago, and the other 
recently captured in a locality in the Midland Fen district, and for- 
warded by Dr. F. D. Wheeler for comparison; also, specimens of 
N. helmanni, Evers., N. fulva, Hb., N. bondii, Knaggs, and Miana 
arcuosa, Haw., which approached closely to N. concolor in colour. 
Mr. Fenn, referring to the Hupithecia from Paisley, and which Mr. 
Tugwell at a previous meeting referred to HE. castigata, remarked 
that it had now been ascertained that the larva was a pine- 
feeder, and therefore it could not be E. castigata, Mr. Tugwell 
said he understood that the specimens were found on pine trunks, 
but that the larve fed on heather, and he had this year reared the 
Species on heather. Mr. Carpenter said the specimen of Argynnis 
ENTOM.—DEC. 1892. 264 
