[19] COLLECTING SPECIMENS OF CETACEANS. 1175 



J^. Teeth about 44 in each jaw. 



Tursiops. Bottle-nosed dolphins. (6.) (All 

 seas. ) 

 g9. Teeth from 80 te 120 in each jaw. 



Prodelphimie and Belphinus. CoairasH dol- 

 phins, (band?.) (Coasts of all eontinen t8.) 

 d*. No fin on the back, or simply a low ridge. 

 g^. Pectorals pointed at the end. 



h^. Teeth 50 to 70 in each jaw. A ridge on the back. Beak long. 



Inia. The Inia. (2.) (Upper AmazoH Hirer 

 and tributaries, South America.) 

 i^. Teeth about 80 in each jaw. Beak short. 



Leucorhamplms. Right- whale porpoises. (9.) 

 (Atlantic and Pacific Oceans.) 

 Ji^. Pectorals broad and truncated. Eyes very small (^ inch). Beak turned 

 up at the end. 



Platanista. TheSusu. (1.) (Riversof India.) 



A SYSTEMATIC AERANGEMENT OF THE GENERA AND 

 HIGHER DIVISIONS OF CETACEANS. 



Order Cete. — Whales or Cetaceans. 



Sub-order Denticete. — Toothed Whales. 



Family Platanistid^. — The River Dolphins. 



1. Platanista, Wagler. — The Susii. 



The Ganges and Indus Rivers, India. 



2. Inia, D'Orbigny. — The Inia. 



The Amazon River and its tributaries. 



3. Fontoporia, Gray. — The Pontoporia. 



Coast of the Argentine Republic. 



Family Delphinid^. — Porpoises and Dolphins. 



4. Sotalia, Gray. — River dolphins. 



Rivers of South America and India. 



5. Steno, Gray. — Long-beaked dolphins. 



Temperate and tropical seas. 



6. Tursioxjs, Gervais. — Bottle-nosed dolphins. 



All seas. 



7. BelpMnus, Linne. — Common dolphins. 



Coasts of all continents. 



8. Prodelphinus, Gervais. — Common dolphins. 



All seas. 



9. Leucorhamplms, Lilljeborg. — Right- whale porpoises. 



Atlantic and Pacific Oceans. 

 10. Lagenorhynchm, Gray. — Striped dolphins. 

 All seas. 



