. Cuvier's animal kingdom : arranged according to its organization. Animals. 348 MOLLUSCA. The Vaginulus, Feruss.*— Has a close-fitted cloak without a shell, extended over the whole length of the body ; four tentacula, of which the inferior are somewhat forked ; the anus quite at the posterior extremity, between the end of the cloak and that of the foot ; and the same orifice leads to the pulmonary cavity situated along the right flank. The orifice of the male organ of generation is under the right inferior tentaculum, and that of the female organ under the middle of the right side. These orga
. Cuvier's animal kingdom : arranged according to its organization. Animals. 348 MOLLUSCA. The Vaginulus, Feruss.*— Has a close-fitted cloak without a shell, extended over the whole length of the body ; four tentacula, of which the inferior are somewhat forked ; the anus quite at the posterior extremity, between the end of the cloak and that of the foot ; and the same orifice leads to the pulmonary cavity situated along the right flank. The orifice of the male organ of generation is under the right inferior tentaculum, and that of the female organ under the middle of the right side. These organs, as well as those of digestion, are very similar to those of the Snail. The genus belongs to both Indies, and is much like our Slugs. The , Lam.— Have the respiratory aperture, and the anus, near the posterior extremity ; their cloak is very small, and also placed there, and contains a small ear-shaped shell, which does not equal one-tenth of the length of the body. In other respects, these animals resemble our Slugs. One species is found abundantly in our southern departments (Testacella haliotoidea, Diaparn.), living under ground, and feeding principally on earth-worms. M. de Ferussac has observed that its cloak assumes an extraordinary develope- nient when the animal finds itself in too dry a situation, and thus produces for itself a sort of shade and shelter. [There are some interesting illustrations of the habits of the Testacellae in Loudon's Magazine of Natural History, vol. vii.]. Fit'. 158.—The Testacella. The Parmacella, Cuv.— Has a membranous cloak, with loose margins, situated [upon a gibbosity] in the middle of the back, and containing, in its posterior part, an oblong flat shell, which exhibits the mere vestige of a spiue. The respiratory aperture, and the anus, are under the right side of the middle of the cloak. The first known species was from Mesopotamia (Par. Olivieri,C\i\.); but we have now one from Brazil, and some others from India. I
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