Mr. C.O. Waterhouse read a paper containing "Descriptions of new Species of the Coleopterous Genus Callirhipis (Rhipidoceridæ) in the British Museum," and exhibited specimens of C.longicornis, male, Waterh. (Andaman Islands), and C. dissimilis, male and female, Waterh. (Borneo).
The Rev. H.S. Gorham communicated the continuation of his "Descriptions of New Species of Cleridæ, with Notes on the Genera and corrections of Synonymy."
Mr. A.G. Butler communicated a paper containing "Descriptions of a New Genus and two New Species of Sphingidæ, with general Remarks on the Family."
Mr. J.S. Baly communicated "Descriptions of New Genera and of uncharacterized Species of Halticinæ."
December 5, 1877.—J.W. Dunning, M.A., F.L.S., Vice-President, in the chair.
Donations to the Library were announced, and thanks voted to the donors.
Mr. W.L. Distant exhibited two rare species of Hemiptera-Heteroptera from the West Coast of Africa, viz. Tetroxia Beauvoisii, Fairmaire, and Oncocephalus subspinosus, A. & S.
Mr. F. Smith exhibited a fine series of both sexes of Macropis labiata, captured by Mr. J.B. Bridgman, of Norwich, at Brundall, near that city. A British specimen of the male had for many years been unique in the collection of the British Museum; at length a second male was taken in the New Forest by the late Mr. J. Walton, and twenty years subsequently Mr. S. Stevens took a third at Weybridge. During the past season Mr. Bridgman took both sexes in some uumbers.
Mr. Smith also exhibited a specimen of Rophites quinquespinosus, captured at Guestling, near Hastings, by the Rev. E.H. Bloomfield during the past season. This capture added a genus and species to the British Hymenopterous fauna, and was the most important addition that had been made for many years.
Mr. Meldola exhibited three photographic enlargements of micro-photographs by Mr. Edward Viles, of Pendryl Hall, Wolverhampton. These photographs, two of which were of parts of insects,—viz. the mouth organs of a bee and the proboscis of a fly,—had been exhibited at the recent Exhibition of the Photographic Society of London, and had obtained one of the Society's medals. The original negatives, taken by means of the object-glass of a microscope fitted into the camera in place of the ordinary lens, were 3 inches square, while the finished enlargements were 30 × 24 inches, being thus enlarged 10 diameters.
Mr. Meldola next exhibited an acoustical experiment illustrating the effects of resonance in increasing the volume of sound emitted by
