TENTH GENUS. DELPHINAPTERUS. 



The Delphinapterus is distinguished from the Dolphin by 

 having no dorsal fin ; and from the Beluga, by having in 

 front of the head a slender beak, flattened transversely, 

 and separated from the head by a deep furrow. The 

 Beluga, moreover, belongs to the northern hemisphere, the 

 Delphinapterus to the southern. 



DELPHINAPTERUS PERONII. 

 PLATE XVI. 



Delphinapterus Peronii, Cuvier, Lesson. Delphinus Leuco- 

 gramphus, Peron. D. Peronii, Laceptde. 



CUVIER had recognized this whale, first described 

 by Peron, as belonging to this genus ; but we are 

 especially indebted to the able author of Zoologie 

 de la Loquille for an accurate account of it. We ex- 

 tract our description from this interesting writer. 



High southern latitudes are the resort of the 

 Delphinapterus of Peron. The historian of the 

 voyage of Baudin met with them to the south of 

 Van Diemen's Land, Dr. Quoy saw them near New 

 Guinea, and we have seen them off Magellan's 

 Straits, and among the Falkland Islands. Many 

 hundreds of them surrounded the corvette, in Ja- 

 nuary 1823, on our entering the Southern Ocean, 



