SOCIETIES. 415 



species is the specimen figured as duplcma by Barrett (' British Lepido- 

 ptera,' xi. pi. 476, fig. 2) ; the female is similar but smaller than the 

 male and somewhat more distinctly marked. B. duplana, Hb. male and 

 female, as also both sexes of B. jiosticana, were exhibited for com- 

 parison. — - Mr. J. H. Durrant also exhibited eighteen specimens of 

 Golias taken by himself in a field of lucerne at Barcote, near 

 Farringdon, Berks, from September 4th to 10th, 1892. These com- 

 prised both hyale (two) and eclusa (fourteen) and two aberrations of 

 the latter, one of a very light orange colour (ab. helicina) and the 

 other a fine ab. helice. All the specimens of G. eclusa were of a 

 yellowish orange tint. — Mr. W. J. Lucas, specimens of Sympetrum 

 fonscolomhii, a species very seldom taken in Britain and quite new to 

 the Forest, taken by him at a pond in the south of the New Forest, 

 on August 4th, 7th, 8th, 25th, and 29th, all but one being males. 

 S. fonscolomhii is usually considered to be a casual visitor only to our 

 shores, but this case seems rather to throw doubt on this supposi- 

 tion, for the date is a late one. The insects on the first visit to the 

 pond were very fresh ; one was a female, which looked even fresher 

 than the males, and females seem seldom to join migratory swarms. 

 — Dr. F. A. Dixey read a letter received by him from Mr. 

 E. A. Agar, of Dominica, West Indies, on the subject of the 

 separation of the sexes of Hypolimnas viisipinis, the writer re- 

 marking that in that island, although haunting similar localities, 

 the female remains on the coast while the male is to be met with 

 some distance inland. The former is scarcely ever to be seen in 

 company with the male of its own species, although it flies with 

 Danaida plexii^ims, of which it is a mimic. Dr. Dixey remarked 

 that it was a common experience that one sex of a butterfly at any 

 given time was more in evidence than the other. Mr. Millar, of 

 Durban, had drawn his attention to the fact that, speaking generally, 

 the males were more apt to be on the wing during the morning, and 

 the females in the later hours of the day. Dr. Longstaff observed 

 that in North Africa certain species of Teracolus gave abundance of 

 males in the morning, whilst in the afternoon the females predomi- 

 nated greatly. — Professor Poulton exhibited the cocoon of the 

 Hypsid moth Deilemera antinorii, Oberth., which Mr. W. A. Lamborn 

 had intended to exhibit on June 7th last. He also exhibited examples 

 from three of the all-female broods obtained by Mr. W. A. Lamborn, 

 chosen because they prove that the unisexual batches are not neces- 

 sarily associated with either of the forms of encedon in the locality, 

 one brood being all lycia, another all encedon, while the third was as 

 nearly as possibly half and half (23 to 24). Professor Poulton also ex- 

 hibited a series of eight A. alciope and five A. aurivillii bred in the 

 present year by Dr. G. D. H. Carpenter from thirteen small larvae 

 found on a single leaf of the food-plant on Damba Island, in the 

 Victoria Nyanza, to the east of Entebbe. The result entirely con- 

 firmed the conclusions of Mr. Eltringham and Dr. Jordan that A. 

 aurivillii is the female of A. alciope. — The Eev. G. Wheeler exhibited 

 some living workers of a small ant, identified by Mr. Donisthorpe 

 as Monomorium pharaonis, imported from Madeira, and now settled 

 in England, together with several butterflies whose bodies and 

 heads had been devoured by them- while in the setting box. He 



