108 THE entomologist's record. 



— A series bred by Mr. G. L, Oox, from larvs found in cherry-bark at 

 Oxton. Exotic cockroaches. — Mr. E. J. B. Sopp, Nyctihora holosericea 

 and Panchlora virescem, from the ship canal docks at Manchester. 



City of London Entomological Society. — March 6th, 1S06.— . 

 Exhibits : Hemithea ^stivaria (strigata) from Japan, which were 

 considerably larger than European forms ; Thalera fimbrialis from 

 central France and Spain, by Mr. L. B. Prout. Heliophobus hispidus 

 taken at sugar and at rest, Torquay, September, 1905, by Mr. V. E. 

 Shaw. Paper : The Eev. C. R. N. Burrows read a paper on Hebiithea 

 ;estivaria (strigata), chiefly devoted to a detailed description of the 

 young larva, from which it appeared that this species forms a con- 

 necting link between Geometra papilionaria and the clothing species 

 Phorodesma amaraydaria and Comibaena pnstulata. March 20t/i, 

 1906. — Exhibits : Pyrameis kershawi, from Australia, Mr. J. A Clark, 

 NoNAGRiA DissoLUTA aiid VAE. ARUNDiNETA, from the Barrett collection, 

 labelled N. neurica, Hb., Norfolk, Mr, H. M. Edelsten. Acronicta 

 TRiDENS AND A. psi, by Dr. T. A. Chapman, Messrs Bell, Mera, Prout, 

 Riches and Burrows. The series of the first named species from Mrs. 

 Bazett's collection, shown by Dr. Chapman, were pronounced by him 

 to be all A. psi, and the series of both species from the Barrett 

 collection, shown as well by Dr. Chapman, also showed some confusion 

 of the two species. The specimens of A. tridens, bred by Mr. Burrows 

 at Mucking, were said by Dr. Chapman to be among the darkest he 

 had seen. Paper : Dr. T. A, Chapman read a paper on the 

 " Differentiation of Acronicta tridens and A psi in the imaginal stage," 

 in which he stated that the only absolute proof of different identity 

 lay in the dissimilarity of the male genitalia. There were many 

 superficial differences, but all proved unstable, and it was impossible 

 to define any character, or combination of characters, which would 

 enable entomologists to separate the two insects, unless they had 

 specially studied the species. To the trained eye, however, these 

 differences prove almost infallible guides. 



The Entomological Society of London. — March 11th, 1906. — 

 Exhibits : Microdon latifrons, Lw. — A rare Dipteron taken in the 

 New Forest, June, 1905, Mr. H. W. Andrews, Gynopteryx gladiaria, 

 Guen, — A South American Geometrid, variable series, Mr. L. B. 

 Prout. Prodenia littoealis, Boisd. — The specimen emerged July 

 16th, 1905, in a breeding-cage, kept for the reception of larvae found 

 in the neighbourhood, by Major R. B. Robertson, at Boscombe, Hants., 

 shown by Prof. R. Meldola. The species has been twice previously 

 recorded in England, first by Mr. Boden, as a larva feeding in an 

 imported tomato {Ent. Record, vol. ii., p. 167), and secondly, by 

 Mr. Gregson, the larva being found in the market-place at Barnsley 

 {Ent. Record, vol. iv., p. 20). Argynnis niobe var. eris. — From the 

 Pyrenees, Cevennes, and the South Tyrolese Mountains, by Mr. H. 

 Rowland-Brown, who remarked that, whereas this and other Argynnids 

 from the mountainous regions of Central France, showed a tendency 

 to maintain constant pale forms, those from the Pyrenees, are generally 

 more lightly coloured, while the high Alpine forms of Central Europe, 

 incline to melanism. Migration of lepidoptera. — Mr. H. Rowland- 

 Brown, for Mr. C. 0. Waterhouse, read a note on this subject, extracted 

 from the Madras Journal of Literature and Science, for 1886-87, 



