236 ZOOLOGY. 



elongated and symmetrical; the snout is short; the 

 lower jaw advances a little beyond the upper ; and the 

 forehead rises abruptly. The lips are undulated, and 

 depressed at their angles. In one example, the number 

 of teeth was 39-39, 39-39; in a second, 40-41, 40-41 ; 

 they are regularly and closely disposed, much curved 

 inwards, and sharp-pointed. In form and situation, 

 the spiracle, swimming-paws, and flukes, accord with 

 those of the common dolphin. 



The upper and hind-part of the head, the back, and 

 flukes, are of an uniform deep-black colour, which, 

 about the lower third of the body, terminates by a 

 straight and abrupt line, leaving the entire abdomen, and 

 inferior portion of the sides, of a pure and dead white. 

 The snout, and anterior third of the head, are entirely 

 white; as also are the swimming-paws, with the ex- 

 ception of a broad black spot on the upper surface and 

 posterior margin of each. The eyes are small, the 

 iris hazel; and the pupil derives an emerald gleam 

 from the reflection from a bright-green tapetum. In 

 every individual I examined, the stomach was distended 

 by a vast number of Calmars, or Flying-squid. (Loligo.) 



We first noticed this Dolphin when on the green 

 water denoting the extent of the Brazil Bank, in lat. 

 40 n S., long. 50 W. They were afterwards frequently 

 seen during our passage round the Horn, and as high 

 as 54 S. ; but we did not observe them in a lower 

 latitude than 40 S.,* on the western side of Cape 



* The French naturalist, Peron, who was the first to describe this 

 Dolphin, did so from specimens he met with in the seas off Cape 

 D'Entrecasteaux, the southern point of Leeuwin's Land, during Baudin's 

 voyage, in 1802. The same species was also observed by M. Lesson, off 

 Cape Pillar, at the entrance of Magallan Straits. We might hence 

 conclude that the species is peculiar to high south latitudes, were we not 



