PREFACE. 
The thirtieth volume of the Zoological Record has been prepared 
by the same Recorders as the last one. The Editor has great 
pleasure in thanking them for their valuable assistance. 
A new list of periodicals and abbreviations appears in this 
volume. The system after which it has been prepared is explained 
at the head of the list. Had the arrangement been reversed, and 
the names of the periodicals preceded the abbreviations, the list 
would perhaps have been more widely appreciated. This course, 
however, would have detracted from its usefulness for the special 
purpose for which it is intended, viz., as a key to the abbreviations 
made use of in the volume. 
The list has been prepared by the Editor with the sanction of 
the Record Committee of the Zoological Society. Some of the 
libraries at which the different works may be consulted are pointed 
out in it. The Editor desires to thank the Librarians of the 
Royal, Zoological, and Linnean Societies for the assistance they 
gave him in the preparation of this part of the new list. He has 
also received most valuable help from Mr. B. B. Woodward, of the 
British Museum of Natural History ; and Mr. F. A. Bather has 
given important aid in regard to the titles of the numerous palae- 
ontological works the list now includes. 
The Editor regrets that the volume appears later in the year 
than its immediate predecessors. This is due to delay in the 
printing, owing to circumstances which the printers assure him 
will not recur. 
D. SHARP. 
>4782 
t 
Cambridge, Oct. 17 , 1894 . 
