v.S 

 &/*/. s/ 



PREFATORY NOTE 



'III. Heptilia :nnl Katnidiia form tin- subjects of this volume. Tin- 



Hepoits of the I'nited States Commission of Fish and Fisheries, and the 

 various Bulletins and Pa|*'i>i of tin- National Museum and Smithsonian 

 Institution, have IHHMI of equal iin|>ortaiice in afToniin^ the motit rw- nt 

 facts and views touching Aini-rii-an /oology. 



\'<>r the use of tin- contents of these works we acknowli^lK*' the courtesy of the 

 Secretary of the Smithsonian Institution. 



The Fishes and Invertebrate^ are ratalo^ued and d'-<iil-d very fully in the 

 above-mentioned ]ml)lication.H, all of which are accessible to students or those desiring 

 further technical knowledge, but their i-oiitents are too voluminous to be fairly 

 ntili/ed in this volume. 



J. B. H. 



279 



