CETACEA. 115 
4 ‘This species, in the slenderness and length of the beak and 
number of teeth, forms the passage between this and the next 
ection. 
In the Ipswich Museum there is a skull of a species allied to this, 
if not the same. The beak is 23 times as long as wide at notch; 
intermaxillaries convex, solid, with an elongated lanceolate space 
in front; triangle elongated, about 3 before the end of the tooth- 
line, rugulose ; lower jaw slender in front, slightly truncated ; back 
of the head convex, rounded; palate flat, rather concave in the 
niddle of the front part; teeth 32 
in. lin 
Lesigth, entire... 16 0 
» of lowerjaw.. 13 3 
ia oe web liea Leet Ps ae 
Width at notch ...... ont G 
_¢ 1 Ab ORB soe £3 
ll. DELPHINUS FRENATUS. The BRIDLED DOLPHIN. 
_ Blackish, paler on the sides, the belly white, end of tail black 
beneath; head black; sides ashy, with a dark band from the 
a mele of the mouth under the eye. 
Delphinus frenatus, F. Cuv. Mam. Lith.t. ; Cetac. t. 1, 158, 
_ from Dussumier’s description and drawing. 
Tnhab. Cape de Verd. 
_ Skull in the Paris Museum, from Cape de Verd, sent by Dus- 
mier. Length 18-0 inches, oe beak 8°3, width at noteh 3°5, 
of middle of beak 1:11; teeth #8, rather larger than D. dubius ; 
palate smooth ; intermaxillaries large, expanded ; nasal convex 
beneath ; triangle rather extended in front of the teeth-lnne, ru- 
gose, and rather more so than D. dubius. There is a eee 
‘skull marked D. frenatus, No. 2: width at notch, 3:7; teet 
or $$; palate flat; nasal very convex, especially behind ; triangle 
extending rather in front of the teeth-line, very rugose; jaws 
-ather strongly reflexed in front of the notch. 
. Head longly beaked. Nose of skull slender, light, rather de- 
pressed, especially in front, much longer than the head. 
Teeth 48-89. Delphinus. 
* Skull flattened behind ; triangle to the teeth-line ; palate flat, 
not grooved on the side. 
12. DeLpuinus CLYMENE. 
Skull rather depressed, the hinder part slightly convex; nose 
ather depressed, shelving on the sides; intermaxillaries convex, 
