INIA GE0FFEENSI3 AND PONTOPOEIA BLAINVILLII. 



115 



easily be made the type of a distinct subfamily, were it not for the difficulty of placing 

 the numerous osculant forms, Psmdorca, Grampus, Lagenorhynchiis, &c. 



In the following tabular view of the arrangement of the Cetacea, many of the genera 

 lately formed, chiefly by subdivision of the old genus BelpMnm, are not introduced. 

 It must not be be inferred from this that I question their validity, though such as are 

 founded on skulls alone may require revision when the entire skeleton is known. But 

 as the present object is to determine the position oi Inia and Pontoxwria in the order, 

 it is only necessary to mention the well-established and generally recognized generic 

 divisions. 



Order CETACEA. 



Suborders. 



I. Mtstacoceti* 



or 



Balsenoidea. 



Families. Subfamilies. 



' Balsenidse Balaeninae . . . 



Genera. 

 Bal^na. 

 Eubalaena. 



l^ BalaenopteridEB 



illegaptermee llegaptera. 

 f Physalus. 

 Balffinopterince \ Sibbaldiua. 



[ Batenoptera. 



II. ODOKTOCETit 



or 

 Delphinoidea. 



PhyseteridsB 



Plataniatidffi 



Delphinida: 



(Physeter. 

 Kogia. 



<( f Hyperoodon. 



I Berardius. 



Iziphiinffi < Ziphius. 



I Dioplodon. 

 1^ Micropteron. 



Plataniatma: Platanista. 



Iniinae 



BeluginiB 



f Pontoporia ? 

 \ Inia. 



J Jlonodon. 

 \ Beluga. 



Phocsena. 



Neomcris. 

 Grampus. 

 Orca. 



l Delphininffi ? <! Pscudorca. 



Lagcnorhynchus. 

 Delpliinus. 

 DelphinaptcruB. 

 ^ Globioccphalus. 



^ia.a«, Kfiro, ; equivalent to the German " Barton-WaUe." t 62ois, .-iro.. 



