324 THE ENTOMOLOGIST. 
SOCIETIES. 
Entomouogican Society or Lonpon.— Wednesday, October 20th, 
1909.—Dr. F. A. Dixey, M.A., M.D., President, in the chair.—Mr. 
Alfred Newstead, of the Grosvenor Museum, Chester, was elected a 
Fellow of the Society——The Secretary announced that Mr. G. T. 
Bethune-Baker and Dr. Malcolm Burr had been elected members of 
the Council in the place of Mr. G. A. K. Marshall, and Mr. R. 
Shelford, resigned.—Mr. W. G. Sheldon exhibited series of the butter- 
flies collected by him at Budapest and Herculesbad during the past 
summer, including Chrysophanus dispar, var. rutilus, C. aleiphron, 
C. thersamon ; Pleberus argyrognomon, Polyommatus orion, gen. vern. 
ornata ; Melitea trivia ; Brenthis hecate; and Pyrgus orbifer.—The 
Rey. G. Wheeler brought for exhibition series of butterflies taken by 
him this year in Central Italy. They included a very fine aberration 
of Melanargia galatea, the left upper wings almost entirely black ; 
the right side much coloured ; and examples of Agriades thetis (bellar- 
gus) var. polonus, Zll., from Assisii—Mr. J. W. Tutt gave instances 
of the occurrence of var. polonus, stating that he had himself found 
it at Cuxton, Kent, where it flew in company with A. thetis, and is 
undoubtedly a hybrid between that species and A. corydon, the geni- 
talia being similar, and the food-plants identical—Mr. G. Talbot 
showed a remarkable new Lycenid butterfly from the Cameroons— 
now in the collection of Mr. W. J. Adams—probably constituting a 
new genus. The neuration most resembles that of the genus Aslauga, 
Kirby, but varies chiefly in the different place of origin of the sub- 
costal nervures of the fore wing, and in the scalloped margin of the 
hind wing.—Mr. J. W. Tutt exhibited examples of Spzlosoma mendica 
bred by Dr. Chapman from the ova found at Hyéres, Var., the females 
mostly normal, but some with a well-defined black border round all 
the wings.—Mr. W. J. Kaye exhibited series of the two species of 
Heliconius—H. chestertonit and H. weymert from Western Colombia. 
The series of H. weymeri included beautiful transitional forms to the 
aberration gustavi in which all trace of the fore wing markings had 
vanished. He said that probably there was some common influence 
at work to produce a black fore wing, as this phenomenon was found 
in several other species of Heliconius from Colombia, particularly in 
the Canea Valley. Heliconius doris in both its red and blue hind 
winged forms produced black fore wing aberrations known as abtecta. 
Heliconius ismenius also occasionally produced much darkened fore- 
wings.—Dr. T. A. Chapman gave the results of some temperature 
experiments made by him upon the larve of Preris brassice. Some 
at 56° Fahr. took four or five or even more days to pupate. Others 
at 86° had all pupated in forty-eight hours in each lot so treated. 
The pupation of a number seemed to be so accelerated that they had 
not time to make their suspension complete or correctly, and of these 
not a few did not pupate satisfactorily; the girth catching them in 
an awkward place, or the larval skin unsuccessfully passing it, &c. 
After sixteen days there is no sign of any of these making an autumn 
emergence, though, of the hundreds of ichneumons—Apanteles glo- 
meratus—a few dozens came out at the end of eight or nine days 
from capture of larve; or eight from escape of ichneumon larve 
