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PREFACE. 
Perhaps no other class of animals has been so much neglected by 
scientists as the American Ostracoda. With the European Ostracoda 
it is quite different. In Great Britain, Norway, Germany, Bohemia 
and along the shores of the Mediterranean Sea able naturalists have 
devoted many years of their life to the study of the Ostracoda of their 
respective countries. A perusal of the bibliography given below will 
show how well they have done the work. In his late monograph (221) 
Professor Wenzel Vavra devotes several pages to a historical resumé 
of the work that has been done upon the European Ostracoda. A1l that 
has been done upon the recent American Ostracoda can be included in 
a Single paragraph, and a small one at that. 
The first scientist to study American Ostracoda was De Kay (58). 
In 1844 he described a few specimens from New York. This was fol- 
lowed in 1852 by an article by Professor Dana (57). In 1855 Lubbock 
(123) published ashort article on South American Ostracoda. Next comes 
a paper by Chambers (41) on Colorado Crustacea. Between 1879 and 
1881 Professor Herrick (83, 84, 85, 86) published several papers on 
this subject. His paper on ‘‘Alabama Crustacea”? is by far the best 
article yet published on recent United States Ostracoda. Professor 
Moniez (142) has recently added a paper on Lake Titicaca Crustacea. 
Between 1892 and 1894 the present writer has contributed his mite 
(212, 213, 214, 215, 216) towards furthering the good cause. In 1893 
Forbes (67*) published a description of a new species. 
The fossil Ostracoda have been studied by Jones (89,92) Brady (29) 
and Ulrich (217). 
In the present communication it is proposed to give complete de- 
scriptions of all known recent United States Ostracoda. In most cases 
the descriptions are made from dissections made by the writer. When 
this has not been possible the description of some American author has 
been incorporated. In all such cases the description is surrounded 
by quotation marks and the name of the author is mentioned. 
I here tender my thanks to Messrs. A. B. Whitby and L. D. Hile- 
land, who have so kindly collected for me material which otherwise 
would have been inaccessible. Mr. Whitby collected in Texas and 
southern Georgia, while Mr. Hileland coliected in Delaware. 
I here acknowledge my great indebtedness to Professor C. L. Her- 
rick, not only for the loan of rare literature and for the use of Plates 
LX, LXIII, LXIV, but also for the careful drawings of Cypris albu- 
querquensis and for alcoholic specimens. 
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