CETACEA. 73 
, 3. DELPHINORHYNCHUS. 
Head attenuated, contracted behind. Nose produced, bald, 
“not separated from the forehead. Eyes moderate. Lower jaw 
¢ fitting into a groove in the edge of the upper. Teeth few, small 
or rudimentary, in middle of inw er jaw, not developed till late. 
d Throat with four parallel slits beneath. Body elongate, rather 
kf swollen behind. Pectoral fin low down the side, oval, narrow, 
‘small. Dorsal faleate, behind the middle of the body, about 2 
from the nose. Blowers on the crown, in a curved line, with bis 
concavity in front. Tail with two falcate lobes, flat, without any 
mtral prominence. Sexual organs under middle of dorsal. 
Skull triangular. Forehead very high m front and swollen 
behind. Intermaxillaries curved in front. Nose very long, com- 
ressed at the hinder end, very narrow, slightly keeled on each side. 
=. wing of the maxilla expanded hor izontally over the orbits. 
Nasal bones encased in the frontal and intermaxillaries. Tem- 
poral pit very small. Palate smooth. Lower jaw-bones elongate, 
tapering, slender, nearly straight. The ear-bone is attached by 
an apophysis to the base of the skull. “ Vertebre 38; viz. 
6 cervical separate, 10 costal, 11 lumbar, 11 true caudal. Meta- 
carpal bones cartilaginous.’ ’—Dumortier, Mém. Brua. xiii. t. 10. 
Nodus, sp. Wagler, N. S. Amph. 34, 1830. 
_Delphinorhynchus, Blainv. Rapp, Cetac.; Gray, Zool. Ereb. & 
i Terror. 
Delphinorhynchus, sp. F. Cuvier. Cetac. 114. 
he Lesson, Giuv. Buffon. 
eterodon, sp. Blainville ; Lesson, Man. 
Melphinus, sp. Blainville ; Desm. Mam. 
__ The skull (as remarked by M. Cuvier) much more resembles 
that of Delphinus than Hyperoodon. The animal is at once known 
from the latter genus by the head not being convex and rounded 
. front, and by the teeth being in the opiate and not at the end 
ef the jaws, and from Ziphius by the small size of the teeth. 
Blainville, when he first saw the animal on the coast of France, 
“eonsidered it the same as Dale’s Hyperoodon, and F. Cuvier fol- 
lows him; but M. Cuvier pointed out, in the Régne Animal, the 
erence in the form of the skull of the French animal. 
MICROPTERUS. BLAINVILLE’S WHALE. 
iy Body deep ash, beneath white (when alive brownish ash-colour, 
‘Delly whitish ash) ; forehead tapermg; dorsal fin 3, pectoral fin 2 
3 end of nose; blowers before the eyes. 
uphin de Dale, Blainv. N. Bull. Soc. Phit. 1815, 329 ; F. Cuv. 
Mam. Lith. t. bad. 
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