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Show 258 DR. J. E GRAY ON THE SKULLS OF THE FELIDAE. [Mar. 14, the Jardin des Plantes, Paris, to examine a skull of Potamogale in which the entire series of teeth has been developed. It is that of a specimen brought from the Gaboon by M . Aubry Le Compte, the stuffed skin of which now forms part of the French Colonial Collection in the International Exhibition, Paris. In this skull the last molars have made their appearance, so that there are ten teeth on each side in both upper and lower jaws. The most posterior molar of the mandible entirely resembles that in front of it, except in its crown being on a slightly lower level. In the maxilla the posterior molar is considerably narrower from before backwards than the tooth which immediately precedes it, but in other respects it resembles it. By an error overlooked in correcting the proof of m y former paper on Potamogale velox, the first, second, and third true molars of the lower jaw are stated to be equal in height to the second premolar ; it ought to have been written the third premolar. 3. Notes on the Skulls of the Cats (Felidce). B y Dr. J. E . G R A Y , F.R.S., V.P.Z.S., &c. Having had occasion, while revising the nomenclature of the specimens of Felidce in the British Museum Collection, to examine a large series of the skulls of the family, I herewith submit the result of that examination. The examination confirms the separation of several of the genera that have been proposed, and shows the distinctness of some species which it has been suggested should be united. The British Museum Collection contains the skulls of a large number of species of Felidce-the largest series of skulls of that group, I believe, that has ever been brought together-nearly twice as many as are figured in M . de Blainville's ' Osteographie,' which embraces figures of all the species contained in the French collections, in Paris and elsewhere. Of most of the species there are several examples, and almost all of them are obtained from the skins of the specimens in the collection: therefore there can be no doubt of the accuracy of their determination ; and should any doubt arise it can be solved by the examination of the skin from which the skull was obtained. I have referred to the work in which the best figures of the skull of each species is to be found, and I have added figures of some of the more interesting forms, which, I believe, are now published for the first time. The form of the flesh-tooth of the Hunting-Leopard (Gueparda) at once separates it from all the other Cats as distinctly as its long slender legs and round face. The flesh-tooth of the upper jaw, instead of being stout and having a more or less large but always distinctly marked prominence with a conical crown on the front of the inner edge, as is common to the skulls of all the Cats and Lynxes, in the Gueparda, on the contrary, is thin, compressed longitudi- |