175 



seven specimens Lad been taken on the 17th of September last, at St. Leonai-d's, 

 feeding on the small bindweed [Convolvulus minor) ; also a specimen of the dark 

 variety of the lavva of Acheiontia Atropos, found near London, and preserved by 

 Mr. Baker, of Cambridge. 



Mr. r. Moore exhibited some impressions of Indian Lepidoptera taken on wax- 

 paper by means of pressure applied to the original specimens. 



Mr. Francis exhibited specimens of Anthribus albinus, Linn., taken at Folkestone 

 in the second week of September last ; and of Chrysomela fulgida, so arranged as to 

 expose the deep red wings of that species. 



Mr. M'Lachlan exhibited a collection of cases of the larvae of various genera of 

 Trichoplera, showing the different materials, and the different dispositions of those 

 materials, used by the larvae in forming their defences; some were composed wholly 

 of vegetable matter, others wholly of shells or small pebbles, others again had these 

 substances mixed heterogeneously ; whilst one case of the genus Setodes appeared to 

 be composed entirely of silk, without being covered externally with any other 

 substance. 



Prof. Westwood exhibited a large sheet of whitish silky matter of extreme smooth- 

 ness, resembling the finest kid, which had been sent to him by Dr. Cuthbert Colling- 

 wood, and had been taken from the bottom of a biscuit-chest; the biscuits themselves 

 were found to have been attacked by larvae, which were described as resembling those 

 of Diptera. The> Professor, however, thought it more probable that the web was the 

 work of Lepidopterous larvae. 



Mr. Stainton said that his first suspicion had been that the sheet in question had 

 been made by the larvae of Tinea granella; but the matter was more opaque than any 

 he remembered to have seen, and which had been ascertained to be the workmanship 

 of that species. 



Mr. Jenner Weir, however, had seen pieces even more dense and opaque, which 

 had undoubtedly been done by the larvae of Tinea granella feeding upon grain. 



Mr. Waterhouse exhibited two specimens of a species of Scymnus, not noticed in 

 his ' Catalogue of British Coleoptera,' and read the following notes thereon : — 



Note on Scymnus quadrilunulaius, Muls. 



"The exhibited specimens of a species of Scymnus are from Kirby's British col- 

 lection. In Kirby's Catalogue they stand as the Coccinella bis-bipustulata of Marsham 

 (Ent. Brit. No. 46, p. 167), but upon comparing them with the specimen in Stephens' 

 collection, which in the ' Illustrations ' is said to be the Marshamian type, I find that 

 Kirbv's insect is quite distinct, it being the Scymnus quadrilunulatus of Mulsanl's 

 ' Coleopteres de France ' (Securipalpes, p. 237, sp. 6), a species which is identified by 

 several authors with the Coccinella quadrilunulata of Illiger. 



" I have re-examined the Marshamian insect, and believe that my former conclusion 

 respecting it is correct, viz., that it is a four-spotted variety of S. frontalis, a variety 

 which does not appear to be uncommon on the Continent, but which is apparently 

 very rare in England, since no other British example has come under my notice than 

 the one referred to. The statement in the ' Illustrations ' and in the ' Manual,' that 

 of the two spots on each elytron the posterior " is the largest," is incorrect, for the ante- 

 rior spot is the larger. 



" The Scymnus from Kirby's collection is a considerably smaller insect, being rather 

 less than S. discoideus. It is of a short ovate form, with the elytra obtusely rounded 



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