CONTENTS. 



XII. Notes on the Fins of Ulasmobranchs, with Considerations on the Nature and Homo- 

 logues of Vertebrate lAmhs. By St. Geokge Mivart, V.P.Z.S. . . page 439 



THE PUBLICATIONS OP THE ZOOLOGICAL SOCIETY OP LONDON. 



The scientific publications of the Zoological Society are of two kinds — " ProceedingSj" published 

 in an octavo form, and " Transactions/' in quarto. 



According to the present arrangements^ the " Proceedings" contain not only notices of all busi- 

 ness transacted at the scientific meetings, but also all the papers read at such meetings and recom- 

 mended to be published by the Committee of Publication. Prom fifty to seventy coloured plates 

 and engravings are attached to each annual volume of the " Proceedings," to illustrate the new or 

 otherwise remarkable species of animals described in them. Amongst such illustrations, figures of 

 the new or rare species acquired in a living state for the Society's Gardens are often given. 



The " Proceedings " for each year are issued in four parts, on the first of the months of June, 

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 year. They may be obtained with black or coloured illustrations. 



The " Transactions " contain such of the more important communications made to the scientific 

 meetings of the Society as, on account of the nature of the plates required to illustrate them, are 

 better adapted for publication in the quarto form. They are published at irregular intervals ; but 

 not less than three parts are usually issued in each year. 



Fellows and Corresponding Members, upon payment of a Subscription of .£1 Is. before the day of 

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The publications may be purchased at the Society's Ofiice (11 Hanover Square, W.), at 

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„,,,,.,„ P. L. SCLATER, 



February 1st, 1679. Secretary. 



