LONDON Zoological Society, December 14.—Prof. W. H. Fowler, LL.D., F.R.S., president, in the chair.—Mr. Sclater exhibited and made remarks on a skin of a brown female of Pauxis galeata, formerly living in the aviary of the late Mr. G. Dawson Rowley, F.Z.S.—Dr. A. Günther, F.R.S., exhibited and made remarks on a skin of a new species of Rhynchocyon from Eastern Africa, discovered by Dr. Kirk.—Prof. T. H. Huxley, F.R.S., read a paper on the application of the laws of evolution to the arrangement of the Vertebrata, and more particularly of the Mammalia.—Lieut. Col. H. H. Godwin-Austen, F.R.S., read a paper on the anatomy of Ferussacia gronoviana, Risso, from Mentone, pointing out its general relationship with Lovea tornatelttna, Lowe, of Madeira, and with Ferussacia follicula, Gronov., from Algiers.—Mr. Arthur G. Butler read a paper on a second collection of Lepidoptera made in Formosa by Mr. H. E. Hobson. Thirty-three new species were found in this collection.—Mr. Oldfield Thomas, F.Z.S., read a paper containing the description of a new species of Reithrodon, obtained in Venezuela by the late Mr. D. Dyson, which was described as Reithrodon ahtoni.—Dr. A. Günther read a paper containing notes on some rare reptiles and batrachians now or lately living in the Society's Gardens.