. The animal kingdom, arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy. Zoology. BRANCHIOPODA. ! gradually pointed, and immediately behind them is a terminal, nearly semiglobular joint, replacing a tail, and winch is furnished with an elongated filament, probably an oviduct. I have observed near the middle of the fifth and four following pairs of feet a globose body, probably analogous to the vesicles which these organs present in J juts. The only apecies,E. al/>itt«, Latr., is very small, and of a whitish colour. It is fo
. The animal kingdom, arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy. Zoology. BRANCHIOPODA. ! gradually pointed, and immediately behind them is a terminal, nearly semiglobular joint, replacing a tail, and winch is furnished with an elongated filament, probably an oviduct. I have observed near the middle of the fifth and four following pairs of feet a globose body, probably analogous to the vesicles which these organs present in J juts. The only apecies,E. al/>itt«, Latr., is very small, and of a whitish colour. It is found in the River of ' 2. The Aspidiphora, Latr., [or second principal group of the Phyllopodous Branchiopoda~\ have sixty pairs of legs, all of which are furnished on the outside, near the base, with a large oval vesicle, and of which the two anterior, much larger than the rest, and ramose, resemble antennas. A large shell covers the major part of the upper side of the body, almost entirely disengaged, (shield-like,) posteriorly cniar- ginate, and bearing anteriorly, in a confined space, three simple sessile eyes, of which the two anterior are larger and lunular ; and two bivalve capsules containing the eggs, annexed to the eleventh pair of feet. Such are the characters of the genus Aptu, Scop., (forming part of the genus Jiinoculus, GeoftVoy, and Limiilut, Mull.).—The body, including the shell, is oval, broader, and rounded in front, and narrowed behind, forming a tail; but if we remove the shell, it is nearly cylindrical, convex above, concave and divided by a longitudinal canal beneath, terninating in an elongated cone. Itis composed of thirty joints, equally diminishing in size towards the posterior extremity, and which, with the exception of the seven or eight terminal ones, bear the feet. The ten anterior segments are membrai soft, and without spines, presenting on each side a small eminence, or knob, with only a single pair of legs to each. The others are more solid a
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectzoology, bookyear1854
