Archive image from page 479 of Cuvier's animal kingdom arranged. Cuvier's animal kingdom : arranged according to its organization cuviersanimalkin00cuvi Year: 1840 468 ARACHNIDA. vided with chelicerae and palpi, or one kind of these organs) constitutes the mouth. Both sexes have eight feet, fitted for running ; but the females exhibit, besides, two false legs, situated near the anterior pair, and only employed in carrying the eggs. These animals are marine, analogous either to Cyamus and Caprellaf, or to the Arachnida of the genus Phalangium, with which Linnaeus united them. The body is c
Archive image from page 479 of Cuvier's animal kingdom arranged. Cuvier's animal kingdom : arranged according to its organization cuviersanimalkin00cuvi Year: 1840 468 ARACHNIDA. vided with chelicerae and palpi, or one kind of these organs) constitutes the mouth. Both sexes have eight feet, fitted for running ; but the females exhibit, besides, two false legs, situated near the anterior pair, and only employed in carrying the eggs. These animals are marine, analogous either to Cyamus and Caprellaf, or to the Arachnida of the genus Phalangium, with which Linnaeus united them. The body is commonly linear, with very long legs, consisting of eight or nine joints, and terminated by two unequal ungues, appearing only to form a single one, the smaller one being sUt. The anterior segment of the body, which replaces the head and mouth, forms a projecting tube, nearly cylindrical, or conical, having a triangular or trilobed orifice at its extremity. It is furnished, at the base, with the chelicerae and palpi. The former are cylindrical and linear, simply prehensile, 2-jointed, the terminal joint che- liferous, with the lower finger, which is immoveable, sometimes very short. The palpi are filiform, from 5 to 9-jointed, with a hook at the tip. Each succeeding segment, with the exception of the last, supports a pair of legs ; but the anterior of those with which the head is articulated, bears, on the back, a tubercle, on which is placed a pair of ocelli ; and on the under side, in the females alone, two other slender legs, folded upon each other, and bearing the eggs, which are placed all round them in one or two masses. The last segment is small, cylindrical, and pierced by a small orifice at the tip. We can discover no vestiges of spiracles. M. Edwards, who has observed these animals in a living state, tells us that he has seen, in the interior of the feet, lateral expansions of the intestinal canal, or cœcums. I had also perceived the traces, under the form of blackish
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