NO. 8 INTERRELATIONSHIPS OF THE CETACEA WINGE 59 



paper on Inia and Pontoporia (Trans. Zool. Soc. London, vol. 6, 

 p. 115), he gave the following synopsis: 



Cetacea. 



I. Mystacoceti or Balcrnoidea. 

 Balcenidcc. 



Balseninse : Balsena, Eubalsena. 

 Balccnopteridcc. 



Megapterinae : Megaptera. 



Balsenopterinse : Physalus, Sibbaldius, Balasnoptera. 

 II. Odontoceti or Dclphinoidea. 

 Physeteridcc. 



Physeterinae : Physeter, Kogia. 



Ziphiinse: Hyperoodon, Berardius, Ziphius, Dioplodon, 

 Micropteron. 

 Platanistid(e . 



Platanistinae : Platanista. 

 Iniinse : Pontoporia ?, Inia. 

 Delphinid(E. 



Beluginse : Monodon, Beluga ( =Delphinapterus). 

 Delphinin£e ? : Phocsena, Neomeris, Grampus, Orca, Pseu- 

 dorca, Lagenorhynchus, Delphinus, Delphinapterus 

 ( = Tursio ) , Globicephalus. 



His conception of the relations between the genera in the family 

 DelpkinidcE Flower developed more fully in 1883 (Proc. Zool. Soc. 

 London). His arrangement there was as follows: 



A. 



a. Monodon, Delphinapterus (Beluga), 

 b. 



a. Phocsena, Neomeris. 



^. Cephalorhynchus, Orcella, Orca, Pseudorca, Globiceps, 

 Grampus, Feresia, Lagenorhynchus. 

 B. 

 a. 



a. Delphinus. 



/?. Tursiops, Clymenia, Steno. 



b. Sotalia. 



Flower followed essentially the same arrangement as that of 1866 

 and '83, but with greater clearness as to the genera, in 1891, in " An 

 Introduction to the Study of Mammals Living and Extinct " which 



