. Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote. 496 ARACIINIDA. the Mites and Spiders amongst the AracJmida, although they possess a greater number of appendages than either, inasmuch as the males have an accessory pair of legs, used in carrying the eggs (tig. 389, A B}. They are small animals with a conical suctorial proboscis and rudimentary abdomen (reduced to a tubercle) ; and they live in the sea, and crawl slowly about amongst the sea-weeds. There are four pairs of very long, many-jointed legs, which contain tubular diver- ticula o
. Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote. 496 ARACIINIDA. the Mites and Spiders amongst the AracJmida, although they possess a greater number of appendages than either, inasmuch as the males have an accessory pair of legs, used in carrying the eggs (tig. 389, A B}. They are small animals with a conical suctorial proboscis and rudimentary abdomen (reduced to a tubercle) ; and they live in the sea, and crawl slowly about amongst the sea-weeds. There are four pairs of very long, many-jointed legs, which contain tubular diver- ticula of the stomach and the sexual glands. There are no tracheae. On the other hand, there is a well-developed heart with an aorta. FIG. 300.—Annnonrn jnitjnngannifltt (rjpne miiinnl). Da, prolongations of alimentary canal into the U-^F. and several lateral ostia. Above the brain lie four small simple eyes. There is a considerable ventral chain, composed of several ganglia. The eggs are carried about on the accessory pair of legs on the thoi-ax of the male (fig. 389) till the larvae are hatched. Pyi/noffimum Jitfuralc 0. Fr. Miiller. North Sea. Pkoxiehilidium Edw., Ammnthi-a Leach, A. jn/gnogonoides Quatr. (fig. 390). TAKDIGRADA.* The Tardigrada constitute a second group, which is often separated as a distinct order. They are small mite-like Arachnida, and may * Doyerc," Mdmoire sur les ; Ann. tic* >>'<'. Xttt., IIC S6r., Tom. XIV., XVIII. C. A. S. Schultze.''MacrobiotusHufelandii, etc,"Berolini 1834.' C. .S. Schultzc, •' Echiuiscus Bcllennanni," Bcrolini, 1S10. Dujardin,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Claus, Carl, 1835-1899; Sedgwick, Adam, 1854-1913; Sinclair, F. G. (Frederick Granville), b. 1858. London, Swan Sonnenschein & co.
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