The animal kingdom : arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy . a manner that theindividual acting as a male to his mate is the fe-male to a third, and from this peculiarity we occa-Fig. ii2 —umiiica sugiiaiis. sioually fiud them joined together iu long strings. They abound in stagnant waters; and they are found plentifully, as well as the Planorbes, in marlyor calcareous beds, which we thus discover to have been deposited from fresh water. The Phvs^,—Wiich were arranged arbitrarily among the Bullae, have the shell of Lim
The animal kingdom : arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy . a manner that theindividual acting as a male to his mate is the fe-male to a third, and from this peculiarity we occa-Fig. ii2 —umiiica sugiiaiis. sioually fiud them joined together iu long strings. They abound in stagnant waters; and they are found plentifully, as well as the Planorbes, in marlyor calcareous beds, which we thus discover to have been deposited from fresh water. The Phvs^,—Wiich were arranged arbitrarily among the Bullae, have the shell of Limnffius, but still thinner, andthere is no fold on the columella. The animal, wlien it swims or creeps, covers its shell with the twopectinated lobes of the cloak : it has two long setaceous tentacula, which are bulged at the base wherethe eyes are placed. The species are small, and live in clear ponds. One of them {Bulla fontinatis. Lam.), has its whorls sinistral,[and this, indeed, is the only certain character which distinguishes the g;enus from Limnffius.]^ Bowtrby niBiiitainb that the sUeU in Pliuiorbia Ls uhvajs • M, dc Dlainville has changed the name Onchidium into Peronia,and transfers the first to the Vaginulus. He places Peroniaamongst his Cycliibraiichia; but 1 cannot perceive any real differencebetween their respiratory organ and that of the other Pulmonea. [Asthis genus is not the Onchidium of Buchanan, as Cuvier supposed,M. de Ferussac proposes to name it Onchil.] II is oval-globose, and the clonlt sufficienxpandcd state, the genus is the ^nipliii1 the shell is turreted, and the cloak ettcja by Fleming Ed.] GASTEROPODA NUDIBRANCIIIATA. 351
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Keywords: ., bookauthorwe, bookcentury1800, bookdecade1840, booksubjectanimals
