INTRODUCTORY NOTE 165 



The writer asks for additions and corrections, that the work may 

 be as helpful as possible to students of fishes. 



It will be noted that the genera have been arranged as far as may 

 be in chronological order, publications of the same year being arranged in 

 alphabetical order in accord with the names of authors. 



The term orthotype is applied to the type of a genus as indicated or 

 distinctly implied by the original author. A logotype is one selected by 

 the "first reviser".' A haplotype is the sole species named under a genus, 

 therefore of necessity an orthotype as well. A taiitotype is a name of a 

 genus identical with the specific name of one of its components. 



Stanford University, California, 

 November 11, 1918: Issued July, 1919. 



