INTRODUCTORY NOTE 



The present memoir is the fourth and concluding part of a catalogue 

 of generic names applied to fishes subsequent to the establishment of the 

 Binomial or Linnsean system of nomenclature, which dates from January 

 1, 1758. 



It covers the late modern period in Ichthyology, signalized especially 

 by explorations of the deep sea, of fossil beds, and of the darker conti- 

 nents. The unexampled explorations of Eigenmann in South America be- 

 long to this period, as also the records of Boulenger of the fishes of South 

 Africa and the varied researches of Regan in the rich material of the 

 British Museum. In this period the fauna of Australia, Japan, and Siberia 

 have been critically and successfully studied. Our knowledge of fossil 

 fishes is assuming definite form through the work of Woodward, Zittel, 

 Hay, and others who have given Palaeontology a constructive turn. 



At the end of this period is recorded the death (December 10, 1919) 

 of the veteran ichthyologist, Franz Steindachner, of Vienna, whose ex- 

 cellent papers mark the years from 1859 to 1915. 



The present writer, as a life-long teacher of Biology, may be par- 

 doned a personal reference. Himself a student of Agassiz and Gill of 

 the earlier periods, he has had the honor of being also a friend, to some 

 extent, a protege, of Baird, Giinther, Vaillant, Liitken, Hilgendorf, and 

 Cope. In addition he has numbered among his own students many of 

 those active in systematic ichthyology during the late modern period. 



Among these are Gilbert. Eigenmann, Evermann, Bollman, Snyder, 

 Starks, Jenkins, Meek, Fowler, Hubbs, Scale, Richardson (R. E.), Oshi- 

 ma. Abbott, Burke, Brayton, Cramer, Culver, Davis (B. M.), Fesler, 

 Fordice, Gilbert (J. Z), Goss, Greeley, Heller, Flerre, Kirsch, McGregor. 

 Pierson, Metz, Rutter. Snodgrass, Swain, Thoburn (W. W.), Thompson 

 (W. F.), Weymouth, WiUiams (T. M.), Otaki (K.), and Woolman. 



It is a pleasure to repeat my acknowledgments to the naturalists 

 mentioned in Part III, as having given valuable assistance. I am also 

 indebted to Arthur W. Henn of the American Museum, for looking up 

 obscure names. My thanks are especially due to Masamitsu Oshima for 

 the arransfement of the Q^eneric names given in the Zoological Record. 



David Starr Jordan. 



Stanford University, California 

 July 25, 1920; Issued August 15, 1920. 



