I have attempted to give the authors of articles on taxonomy, 
with the dates of their publication, which supplies something 
of a guide to ostracod workers on the importance of the 
various journals. 
During the 19th Century it was customary to indicate 
the date on which a paper was presented before a learned 
society, and many references give this date instead of the 
actual date of publication. Again, during war years, many 
European journals fell behind in publication, and issued 
Journals for particular years at dates much later than normal. 
Sometimes these later dates are indicated on the title page, 
sometimes they are omitted, sometimes they are shown as foot- 
notes to particular articles. Occasionally preprints of 
certain articles were issued several years before the full 
volume was issued. From this outline it is understandable 
why so many dates given in bibliographies are erroneous, 
occasionally by as much as ten years. These erroneous list- 
ings have caused me to purchase many microfilms which did 
not deal with ostracoda at alle I have attempted by every 
means at my command to verify the dates given in my Index 
and Bibliography, but feel that some error is unavoidable. 
I will appreciate readers calling my attention to any such 
errorSe 
Probably the greatest difficulty in obtaining microfilm 
copies of articles, is the failure of authors to give the 
record of pages and plates when citing an article. I have 
