.878.] 189 



Mr. McLachlan exhibited a selection of the Insecta captured between the 

 parallels of 78° and 83° N. latitude by the naturalists of the recent Arctic Expedition, 

 in anticipation of his Report to be read at the Linnean Society (vide ante p. 167). 



The Rev. A. E. Eaton narrated some of his experiences regarding Arctic 

 insects in Spitzbergen. He was disposed to consider that their transformations might 

 sometimes be protracted over two or more years. He had noticed, that although 

 there was no actual night in the middle of summer, the insects did not appear insen- 

 sible to the time that should be night, in which the amount of light was about equal 

 to that of ordinary sunlight in London as compared with that of the open country. 



Mr. Meldola exhibited a Oonopteryx rhamni with five wings, captured near 

 Brandon, Norfolk, in August, 1873, by Mr. Woodgate. Also a gynandromorphous 

 Pieris brassicce, taken near Thame, Oxfordshire, by Mr. J. B. Watson, the right 

 side ? , the left <J . 



Mr. Goss exhibited a gynandromorphous Gonopteryx rhamni, from Abbott's 

 Wood, Sussex, the right side $ , the left $ . 



Mr. Douglas exhibited a Polyphylla fullo, which flew on board a steamer at 

 Antwerp, in August, and was brought to London ; a specimen of Tettigomelra 

 impresso-piinctata, recently captured at Sanderstead Downs ; also Typhlocyba 

 dehilis (Douglas), from the same locality. 



Mr. W. C. Boyd exhibited a larva of JPieris rapcB attacked by Microgaster, 

 apparently the first instance that had been recorded, as it usually infested P. brassicce. 

 Tliis exhibition was made in connection with a request from Entomologists in the 

 United States for cocoons of this insect, in order to counteract the destructiveness of 

 P. rapcE, recently imported into America. 



Professor Westwood read notes on new exotic lamcllicorn Coleoptera, and exhi- 

 bited the insects. He called attention to an article on sound-producing Crustacea, 

 published by Mr. Savile Kent in "Nature" (November 1st, 1877). Professor Wood- 

 Mason followed with a lengthened discourse on stridulating organs in Crustacea, 

 Scorpions, Myyale, Orihoptera, &c. 



Professor Westwood called attention to a paper by Dr. Anderson (Proc. Asiatic 

 Soc. Bengal, 1877) on Oongylns gongyloides, L., a remarkable Mantis that is stated 

 to mimic a flower, the deception being supposed to attract insects upon which the 

 Mantis feeds. Professor Wood-Mason referred to the same subject, and adduced 

 other instances of similar mimicry in eastern Manlidoi. 



Sir Sidney Saunders read notes on the specific identity of the species of trap- 

 door spider taken at Ilanipstead, which the Rev. O. Pickard-Cambridge had at first 

 pronounced to be Atypus Becki, but which was probably A. >S'i(Z2eri, Latreille. Mr. 

 Enock exhibited a $ and $ of this spider, taken at Uanipstead on October 24th last. 



Mr. C. O. Waterhouse read a paper on the Coleopterous genus CalUrrhipis, and 

 exhibited specimens. 



The Rev. H. S. Gorliam read a continuation of his paper on the Cleridee. 



Mr. A. Gr. Butler communicated a paper on a new genus and some new species 

 of Sphingidce. 



Mr. Baly communicated descriptions of now genera and species of llallicina:. 



