PROCEEDINGS OF SCIENTIVIC SOCIETIES. 299 
Jerax, lately known as the “salmon disease”) was detected growing on the 
skin and particularly plentiful around the spots of injury received during 
its capture. Another specimen of the Beluga, kept in the same tank, was 
more lively in its movements, and remained longer submerged between 
each surface respiration.—J. Murin. 
ENTomMoLoGcieaL Socimty or Lonpon. 
June 5, 1878.—H. W. Barus, F.L.S., F.Z.S., President, in the chair. 
Mr. John A. Finzi exhibited a remarkable female specimen of Anthocharis 
cardamines, taken in Darenth Wood, Kent. The under side ouly of one 
fore wing possessed an orange patch. 
Mr. F. Grut exhibited a specimen of an immature Mygale from South 
Africa. 
Mr. D. Greig Rutherford exhibited a series of large cocoons sent by 
Mr. George Thomson from Mount Camaroons, West Africa, formed by the 
caterpillars of a species of Bombyx allied to Anaphe Panda, Bay. They 
were taken at an elevation of 5000 feet above the level of the sea, and 
judging from the nature of certain twigs and pieces of native cord fastened 
to their exterior covering appeared to have been found attached to fences or 
to the eaves of houses. It would appear that A. Panda, like some other 
species of Bombycida, is social, and that the caterpillars unite in considerable 
numbers in order to form an aggregate cocoon of sufficient strength to 
preserve the chrysalis from the attacks of enemies, and probably also against 
extreme changes of temperature. 
Mr. H. T. Stainton ‘stated that the two small ermine moths (Hypono- 
meuta padella and H. evonymella) of this country were distinguished from 
one another by the fact that the larvee of one species spin up gregariously in 
close proximity, while those of the other species scatter themselves before 
spinning up. 
Mr. Rutherford next exhibited a specimen of a Papilio which appeared 
to be a true case of so-called “ hermaphroditism” occurring between Papilio 
Cynorta and P. Boisduvalianus, the left side of the wings showing the 
markings (somewhat interrupted) of the former, and the right side those of 
the latter species. This specimen seems to confirm the suspicion that the 
two forms are but the sexes of one species. 
Mr. Meldola exhibited photographs of two species of tropical Orthoptera 
allied respectively to Pterochroza illustrata and P. ocellata, Serville, which 
had been sent to Mr. Darwin by Dr. Zachurias, of Chemnitz, on account of 
the very perfect leat-like appearance of the fore wings, this ‘ protective 
resemblance” extending to microscopic detail. The hind wings were orna- 
mented with ocellated spots, probably acquired through sexual selection. 
