The animal kingdom : arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy . propagation, merely by sponta-neous division, the hind part of the body beinggradually transformed into an additional animal,the head and tentacular cirrhi being already de-veloped. Muller describes one mother, to whichthree fostuses, of different ages, appeared in onelength. The mother had thirty segments, theyoung one nearest to it had eleven, and the two ^ ^ Fi;? 2J14.—Nereis proliftrra. hinder, or older ones, seventeen segments After these should r
The animal kingdom : arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy . propagation, merely by sponta-neous division, the hind part of the body beinggradually transformed into an additional animal,the head and tentacular cirrhi being already de-veloped. Muller describes one mother, to whichthree fostuses, of different ages, appeared in onelength. The mother had thirty segments, theyoung one nearest to it had eleven, and the two ^ ^ Fi;? 2J14.—Nereis proliftrra. hinder, or older ones, seventeen segments After these should rank various genera, equally distinguished by a slender body, and gills reduced tosimple lamiuse, or even to simple filaments or tubercles. Several, however, have no jaws nor tentacles. Phyllodoce, Sav. {Nereiphytta, Blainv.),—In common with the Nereids proper, have tentacles of even number at the sides of the bead, and fouror five small ones anteriorly. They have distinct eves ; their large trunk is furnished with a circletof very short fleshy tubercles, does not contain jaws, and, what particularly distinguishes them, tlieir. DORSIBRANCHIATA. 395 gills are in the form of very broad leaves, forming a range on each side of the body, upon which niiiiiitevessels ramify extensively. Tlic iV. ririilit, MuUer, of which M. Savigny, without having seen it, proposes to make a genus Eiilalia, niul thetwo species of Eunomia, Kisso, appear to me to belong to P/ii/llodoce, tu which also, perhaps, sliould be referred llieNereisiiinnigera, MonUgu, and the A, ilillifera, Muller, which M. Savii;iiy, without seen them, proposes to makeinto a genus Lephlia, and N. longa. Otto, wliich M. Siiviirny places with in bis genus Eliona. All thesereciuire to be examined anew after the method detailed by M. Savijny. The genus Phiilloducc, Sav., however, mustnot he confounded with that of Jl. Itanuni, which latter is allied to Apkrodila,a\u\ es|iccially to Polynoe. Alciope, Aud. & M. Edwards,—
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Keywords: ., bookauthorwe, bookcentury1800, bookdecade1840, booksubjectanimals
