PREFACE. 
r 11HE thirty-eighth Volume of the Zoological Record has 
involved a very great amount of labour. That it appears 
a little ]ater than usual is not due to any delay on the part of 
the Recorders, but rather to the time that the Editor found it 
necessary to devote to the recently published Index-Volume. 
The work of the Recorders becomes more extensive year by 
year, and the Editor feels that he owes them very sincere 
thanks for carrying out their task so well as they do. 
Professor Herdman having been absent on a Government 
Mission to Ceylon, Miss Embleton has kindly furnished the 
Record of Tunicata for this Volume. 
The Editor has the pleasure of thanking the Librarians of 
the Royal, of the Linnean, and of the Zoological Societies; as 
well as those in charge at the British Museum (Natural 
History), at the Radcliffe Library, Oxford, and at the Science 
Library, Victoria and Albert Museum, who have supplied him 
with information as to the works taken at their Libraries. 
Prof. Minchin has kindly assisted in keeping the list up to 
date. 
The list of periodicals is again augmented. The Librarian 
of the Science Library, Victoria and Albert Museum, has re¬ 
vised it with regard to the periodicals taken at that Institution. 
The first list of periodicals in the Zoological Record was 
inserted by Professor Newton in 1871, It comprised the names 
