CETACEA. © | 207 
than those of the preceding; the muzzle is also longer and more 
compressed; its origin is not known. | 
D. plumbeus, Dussum. The muzzle with the same compressed 
form, but armed throughout with thirty-seven teeth. From 
Malabar.(1) 
D. velox, Dussum. A some iat longer muzzle, and forty-one 
teeth throughout. From Ceylon. 
D. longirostris, Dussum. Surpasses even the Common Dol- 
phin i in the number of its teeth, having from fifty-five to sixty 
throughout. From the coast of Malabar.(2) 
M. de Blainville separates from this first division of Dolphins, 
_ under the name of Dre.rninoruyncuus, those species in which the 
snout, though long and slender, is not separated from the forehead 
by a decided furrow. One of them, 
D. micropterus, Cuy., was thrown upon the coast of France; 
it is remarkable for its dorsal fin, which is also placed very 
far back. It grows to the length of fifteen feet, and loses all its 
teeth at an early age.(3) 
D. rostratus, Cuv.. A slender muzzle, and externally all of a 
_ piece with the head; twenty-one teeth throughout. Its dorsal 
_ fin is of the usual size.(4) 
 D. gang reticus, Roxburg, (The Dolphin of the Ganges) should 
_be distinguished from this first group. Its spiracle is longitu- 
dinal, and the jaws slender and inflated at the end. It ascends 
the Ganges to a great distance, and is probably the Platanista’ 
of Pliny. 
Puocana, Cuy. 
‘The Porpoises(5) have no rostrum, but a short, and uniformly con- 
vex muzzle. 
(1) I suspect this D. plumbeus to be the same as the D. malaianus of MM. 
Lesson and Garnier, Voy. de la Coq. pl. ix, f. 5. 
(2) We cannot, in this work, give a place to species which have been only seen 
at a distance, and of which no part has been produced; we therefore mention, 
merely as indications, the D. albigena, Quoy and Gaym., Voy. de Freyc. pl. xi, or 
D. superciliosus, Lesson and Garn., Voy. de la Coq. pl. ix, f. 2.—The D. cruciger, 
Quoy and Gaym. Ib. f.3 and 4, which is at least closely allied to the D. bivittatus, 
Less. and Garn. f. 3.—The D. dunatus, Less. and Garn. f. 4.—Still less can we admit 
species which have not even been figured. 
(3) Blainville, Nouv. Bullet. des Sc. IV, p. 139, and Fr. Cuv. Mammif. under the 
__ very improper name of D. de Dale, which belongs to the Hyperoodon. 
N.B. The D. rostratus of Shaw is the gangeticus. 
(4) Add the Dauphin couronné, Freminville, Nouy. Bullet. des Sc. Il, No. 56, 
ph. 1, f. 2. 
(5) Porpoise, from porcus piscis, hog-fish. 
