USEFUL WORKS OF REFERENCE. 
THE following list includes only such works as will aid the 
student in arranging and identifying his collections, all mor- 
phological papers being purposely omitted. The more useful 
of these are printed in full face type. While the list is far 
from perfect it is hoped that it will prove of use to the 
zoologist. 
The majority of the titles have been translated either in 
full or in abstract, but the language in which the article is 
written is indicated by the abbreviation following the title. 
For a more complete list of papers, students should refer to 
the various special bibliographies quoted. The catalogues 
published by Friedlander und Sohn of Berlin will also prove 
useful. 
All Museums should possess Dictionaries of French, 
German, Latin, Swedish, Danish, Spanish, Italian, Portuguese 
(147) 
