In addition to the papers containing subgeneric, 
generic and other taxonomic terms, I have included in the 
bibliography, the papers in which the genotype of sub- 
genotype was described, in case such type was by another 
author. No attempt is made to list species other than 
those used as genotypes or subgenotypes, as such a catalogue 
would be of vast proportionse My partial card index, based 
on about 2,000 of the more than 3,000 papers in my library 
which I have cross-indexed by species contains about 19,000 
cardse I would estimate that more than 30,000 specific 
names have been applied to the ostracoda, and confusion in 
places is very great. This is occasioned by the fact that 
for the most part zoologists, working with Recent ostracoda 
have paid practically no attention to the work done by 
paleontologists. The paleontologists working with Paleozoic 
ostracoda have until most recently used an artificial classi- 
fication, not based on the living organisms, and in many 
cases have oriented the carapaces in reverse, with the 
posterior shown as anterior, the left valve as ripeen and in 
some cases have even illustrated them upside down. As a 
result my card index contains upwards of 500 homonyms which 
may be attributed directly to the fact that workers in one 
field were not familiar with the work done in the other. 
In this Handbook, I have attempted to include not only 
all valid ostracod terms which have been used, but those 

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