34 PREFACE. 



has kindly placed his entire card catalogue of the higher groups 

 in my hands. To many others, whose favors I cannot definitely 

 recall, expression of thanks is also cheerfully granted. 



The writer is under obligations to Mr. Silas R. Morse, 

 Curator of the State Museum of New Jersey, who has en- 

 couraged and assisted in every way towards making the present 

 work possible. 



The figures given are mostly my own, made in water-colors 

 from fresh specimens, where possible, and, if not, with pen and 

 ink sketches from preserved material. Where necessary, figures 

 have been copied from other writers, and are duly credited as 

 such. All the Entomostraca have been drawn by myself. Except 

 in the case of the barnacles, and where necessary to copy from 

 other writers, I have modified the figures to suit present purposes. 



Finally, the work is offered not only as the first comprehensive 

 attempt at describing and illustrating the Crustacea now known 

 from the limits of New Jersey, but equally as a contribution to 

 the knowledge of most of the Crustacea of the Middle Atlantic 

 States, of which New Jersey is the integral unit in this respect. 

 For this reason it has been necessary to consult the Crustacean 

 fauna of the adjacent Atlantic States region. With this end in 

 view, an appended list will follow the discussion of the New 

 Jersey species, and thus united the two will form a complete 

 check-list. It is, perhaps, scarcely necessary for me to state 

 that the principle followed in nomenclature is priority, with 

 actual type designation either originally or by the first reviser. 



Though at best inevitably faulty, our work, it is thought, will 

 be of great service in future studies. Therefore, should it 

 arouse sufficient interest to produce other and more perfected 

 accounts, then the writer believes his purpose will be accom- 

 plished. 



HENRY W. FOWLER, 



Academy of Natural Sciences 

 of Philadelphia. 



October 29th, 191 2. 



