560 THE ZOOLOGIST. 



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 ■ Nomen- 

 clator,' 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 Zoolo- 

 gist ' 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, aud their average lengths in each reader's locality. 

 — Gerald Leighton (Grosmont, Pontrilas, near Hereford). 



