73 6 The Smithsonian Institution 



with " Part I " of the " American Land and Fresh-water 

 Shells." Most of the descriptions, synonymy, and illustra- 

 tions of that volume are reproduced in the " Manual," but the 

 classification is modified, and instead of the matter being in 

 a continuous systematic sequence, it is broken up and ar- 

 ranged under seven geographical categories species "a. 

 Universally distributed," "6. Pacific province," " c. Central 

 province," " d" " e." and "/" "Eastern province," "Northern 

 region," "Interior region," and "Southern region," and "g. 

 " Locally introduced." 



In addition to the foundation for future studies laid in the 

 several monographs here described, further aid to biblio- 

 graphical studies was given by the publication in 1863 and 

 1864 of a "Bibliography of North American Conchology." 

 The extent of this work may be judged by the fact that the 

 two parts cover nearly one thousand pages. 



The other articles and memoirs of various kinds based 

 more or less on the material collected by the Institution are 

 numerous, but have appeared in other publications. 



FISHES 



As EARLY as 1851 "Contributions to the Natural History of 

 the Fresh-water Fishes of North America" were initiated by 

 Doctor Charles Girard in " A Monograph of the Cottoids." 

 This monograph was an excellent article, and the entire 

 anatomy was described and illustrated in detail. Unfortu- 

 nately, " Part I " was also the last of the " Contributions," 

 and no other separate publication on fishes appeared for 

 many years. " A Report on the Fishes of the New Jersey 

 coast, as observed in the summer of 1854, at Beesley's Point," 

 by Professor S. F. Baird, was indeed published in the ninth 

 annual Report of the Smithsonian Institution, and also issued 



