Index-Volume to New Generic Names in 'Zoological Record.'—The Council of the Zoological Society has given instructions for the publication of an Index-Volume to the new generic names mentioned in the 'Zoological Record,' vols, xvii.-xxxvii. (1880-1900). The volumes previous to vol. xvii. have been indexed in the 'Nomenclator Zoologicus' of Scudder, published by the Smithsonian Institution in 1882. The contemplated Index- Volume of the 'Zoological Record,' in order to increase its usefulness, will include names omitted from Scudder's list, and from the volumes of the 'Zoological Record.' Thus zoologists may have at their disposal (in the 'Nomenclator Zoologicus' and the new Index together) a complete list of all the names of genera and subgenera used in zoology up to the end of 1900. It is earnestly requested that anyone who knows of names omitted from Scudder's 'Nomenclator,' or from the volumes of the 'Zoological Record,' will forward a note of them, together, if possible, with a reference as to where they have been noticed or proposed, so that the new list may be made practically complete. Such information should be addressed to the Editor of the 'Zoological Record,' 3, Hanover Square, London, W.; or to C.O. Waterhouse, Esq., British Museum (Natural History), South Kensington, London, who is engaged in compiling the list.
British Snakes.—I should be very grateful to readers of 'The Zoologist' for their help in the preparation of a work I have in hand on our British Snakes. Particularly I would ask for the relative frequency of the Adder and Ring-Snake, and their average lengths in each reader's locality.—Gerald Leighton (Grosmont, Pontrilas, near Hereford).
