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Show 206 MAMMALIA. h 1 proportion to the body, and which the head .be~r~ t e ;s~~ely large. The first comprethose in which It IS Immo eia I hends the Dolphins and the N arwha s. . DELPHINus, Lin. . h. all simple, and almost always The Dolphins have teeth m bot .Jaws, s and in proportion to their the most carmvorou ' ' conical. They are . 1 r There is no crecum.( 1) si. ze, the most cruel of their ore e • DELPHINus, Cuv. 11 d have a convex forehead, and the The Dolphins, properly so ca e ' r snout in front of the head, muzzle forming a kind of rostrum, o ' more slender than the rest. 1 ... f 1 (The Common Dol· 1 • L . Lacep Cet. p · xm, · · . D. . )d eTtphm ,s, ·u' t depre·s se d an d ar med on each side of the JaW phm. e sno fort ·seven teeth, slender, arcuate, and with from forty-two to . Yb th· from eight to ten feet in . d bl k hove wh1te enea ' 1p omtthe ; Thai~s aam • ma' I , Pound in numerous bodies in every sea, I' • • enl ceiehrated for the velocity of its motion, which sometimes an . 'tates it on the decks of vessels, appears really to have ~::~I~~e Dolphin of the ancients. The entire ~rganizati~n of the brain seems to indicate the docility they attnbuted to ~V f 2 D tursio Bonnaterre ; vulg. le Souffleur; Lacep. 'f · ' (Th~ Great'Dolphio.) Snout short, broad and d~pr:ssed{ .~:: twenty-one to twenty-four teeth throughout, con~ca ' an:h and blunted Individuals have been seen fifteen feet m leng '11 it appea· rs that they are found m· t h e M e dI' t ei· ranean as we as in the Ocean.(2) h h ugh· D dubius Cuv. Only thirty-six or thirty-seven teet t r 1 o h' out, .b ut as f' ine and pointed as those o f t h e C omm on Do p m, which it also resembles in its colours. . ut colour· D frontalis Duss. Very similar to the precedmg, b h t ed s:mewhat dift'erently, and has thirty-four teeth throu~ ou. Discovered by M. Dussumier, at the Cape de Verd Islan Is. er D. f1'ontatus, Cuv. But twenty-one teeth throughout, arg (1) There is no family of the Mammal.ia more di.f ficult to observe,f l ocf tuwahtiincgh we have more imperfect descriptions, and whose. synonymes ar~ more. u than that of the Cetacea. I have endeavored to select authentic speCl~S· which (2) The Whale or Capidolio of Belon, and the Orca, of the ~a-~e au:f ~olphins very probably is that of the ancients, belong also .to the dtv~sJ~nbut their cha· with snouts, and are much larger than the above mentioned specle~, , 1 • 8 pro· racters are not sufficiently determined. The D aup,,n ·n J~e'r es of Bonnaterre bably referable to one of the two. CETACEA. 207 than those of the preceding; the muzzle is also longer and more compressed; its origin is not known. IJ.plumbeus, Dussum. The muzzle with the same compressed form, but armed tht·oughout with thirty-seven teeth. From Malabar. ( l) D. velox, Dussum. A somewhat longer muzzle, and forty-one teeth throughout. From Ceylon. IJ. longirostris, Dussum. Surpasses even the Common Dolphin 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 DELPHINORHYNcHus, 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, Cuv., 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. gangeticua, Roxburg, (The Dolphin of the Ganges) should be distinguished from this first group. Its ipiracle is longitudinal, and the jaws slender and inflated at the end. It ascends the Ganges to a great distance, and is probably the Platanista of Pliny. PHOOlEN.A., Cuv. 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. BUpercilioBUB, Lesson and Garn., Voy. de la Coq. pl. ix, f. 2.-The D. cruciger, Quoy and Gaym. lb. f. 3 and 4, which is at least closely allied to the D. bivittatus, Lesa. and Garn. f. 3.-The D. lunatua, Less. and Garn. f. 4.-Still less can we admit species which have not even been figUl'ed. . (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. roatratua of Shaw is the gangeticua. ( 4 pl. I,) fA, d2d. the DaupMn couronne, Freminville, Nouv. Bullet. des Sc. III, No. 56, (S) Porpoise, from porcua piaci8, hog-fish. . |