26 FISHEEIES OF THE UNITED STATES. 



Section I.— INVESTIGATION OF THE WATEES AND EE- 



SEAEOH. 



XXXVIII. A.— Deep-Sea Eesearch — Continued. 



172a. Series of specimens of marine invertebrates, obtained 

 from the deeper waters off the northeastern coast of 

 the United States, since 1878, by the United States 

 Fish Commission and Gloucester Fishing vessels, and 

 representing some of the more interesting features of 

 the fauna of that region. Specimens of rock forma- 

 tion from the deeper waters off the New England 

 coast. 



B. — Investigation of the fresh waters. 



172&. Collections of crayfish and fresh water sponges from the 

 rivers of the United States. 



Section K.— LITEEATUEE. 

 XXXIX.— Books. 



173. Publications of the United States Fish Commission. 



Publications of the State Fish Commissions. 



Publications of the United States Government relating to 

 the fisheries. 



Principal works of American writers on the marine and 

 fresh water fauna of the United States, the geo- 

 grajjhical distribution, development, and life history 

 of aquatic animals, and, in general, investigations 

 upon seas, lakes, and rivers, and their inhabitants. 



