SOCIETIES. Jl86 



typical forms and varieties of the following species : — Celcena haworthii, 

 Grammesia trigrammica [trilinea), and Apamea fibrosa ? The information 

 is wanted in connection with the series of papers on varieties of Noctuae 

 now appearing in the ' Entomologist.' I am already indebted to a large 

 number of lepidopterists for useful communications, but I would point out 

 that T get twice the number of communications after the species has been 

 dealt with in the 'Entomologist' than before. If those interested would 

 write me a short note on any variation they may have observed in any 

 species about a month or two before such species would be noticed, I could 

 embody their ioformation, and make it generally useful. At present I 

 should be glad of any information regarding Mlanas and Caradrinidse, a 

 little later of the Agrotidse, and so on. Apparently unimportant phases of 

 variation should be mentioned. — J. W. Tutt. 



Ereatum. — On page 243, line 4 from bottom, read " males " instead of 

 "females."— T. H. Hall. 



SOCIETIES. 



Entomological Society of London. — October 2nd, 1889. — The 



Right Hon. Lord Walsingham, M.A., F.R.S., President, in the chair. 



Mr. Arnold Umfreville-Henn, of Heaton Chapel Rectory, near Stockport, 



was elected a Fellow. Mr. F. P. Pascoe exhibited a number of species of 



insects of all orders, collected by himself during the past summer at 



Brindisi, and in Greece and the Ionian Islands. Mr. J. W. Douglas sent 



for exhibition specimens of Lygus viscicola, Puton, a species new to Britain, 



taken at Hereford, in September last, exclusively from mistletoe, by Dr. T. 



A. Chapman. Mr. R. M'Lachlan exhibited nearly one hundred specimens 



of Trichoptera recently collected in Iceland by Mr. P. B. Mason. Only 



six species were represented, and of these five had been previously recorded 



from the island. He remarked on the great umount of variation existing 



in some of the species. Mr. E. B. Poulton exhibited a mounted specimen 



of the yellow powder from the cocoon of Clisiocampa neiistria under a power 



magnifying 188 diameters. The powder was thus seen to consist of 



crystals so minute that the form could only just be made out. He said the 



powder was present in a crystalline form in the malpighian tubules, and 



was discharged from the anus of the larva. A discussion ensued as to the 



functions of the malpighian tubes, &c., in which Mr. Staiuton, Lord 



Walsingham, Mr. M. Jacoby, Mr. P. B. Mason, Mr. M'Lachlan, and Dr. 



Sharp took part. Mr. Poulton also exhibited some photographs of living 



larvae of Hemerojjhilla abrnptaria, showing different depths of colour which 



had been induced by experiment ; specimens of the larvae preserved in 



spirit were also shown, togetlier with water-colour representations of two 



varieties. He said that, as in other experiments of the kind, the larvae had 



been rendered very pale by being surrounded by green leaves and stems 



only, whereas they became extremely dark when numbers of dark twiga 



were intermingled with the leaves of the food-plant. All vvere bred from 



eggs laid by the same female. Mr. F. Merrifield said that Dr. Chapman 



had recently obtained similar results from experiments on the larvae of 



Ennomos alniaria. The Rev. Dr. Walker exhibited, and read notes on, a 



number of Coleoptera, Neuroptera, Hymenoptera, and Diptera, which 



formed the second instalment of the collection he had recently made in Iceland. 



