Title: Cuvier's animal kingdom : arranged according to its organization
Identifier: cuviersanimalkin00cuvi (find matches)
Year: 1840 (1840s)
Authors: Cuvier, Georges, baron, 1769-1832; McMurtrie, Henry, 1793-1865; Metcalf Collection (North Carolina State University). NCRS
Subjects: Animals
Publisher: London : Orr and Smith
Contributing Library: NCSU Libraries
Digitizing Sponsor: NCSU Libraries

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Phalangium, Linn., has the chelicerae projecting-, much shorter than the body, and the eyes placed upon a common tubercle. The legfs are very long and slender, and, when detached from the body, they exhibit sig:ns of irritability for a few moments. Ph. corimtum,\À\\\\., male; Ph. opilio, Linn., female; and other native species. Consult, also, the monographs of this genus published by Latreille at the end of his Uist. Fig. 37.-Phaiangiura cornutam. fff^f_ fjgg Fourmis ; Herbst. and Hermann, Mém. Aptérolog. Gonpleptes, Kirby, has the palpi spined, wiih the two terminal joints nearly equal-sized ; and the coxa; of the hind pair of legs are very large, and soldered together, forming a plate beneath the body. The hind legs are wide apart from the others. G. horridus, Kirby. Brazil. Siro, Latr., has the chelicerae projecting nearly as long as the body ; the eyes wide apart, and each placed upon an isolated tubercle, or without support. S. rubens, Latr. Macrocheles, Latr., has exposed and very long chelicerae, but the eyes are either sessile or wanting. The two fore-legs are very long, and resemble antennas. The upper side of the ^ body is like a scale, without distinct articulations. Acarus viarginatus, and A. testudi- narius, Hermann. Trogitlits, Latr., has the anterior extremity of the body projecting like a clypeus, receiving, in a cavity on its under-side, the chelicerœ and other parts of the mouth. The body is vei-y flat, and covered by a very firm skin. It is found beneath stones. T. nepœformis, Latr. Phal. tricarinatitm, Linn. South of France. ^'e- 3S.—Conyicptes acan- Ihurus. fM. Dufour has described a genus allied to the last under the name of Cœcidus, in the Annales des Sci. Nat. for 1S32. Many other very curious Brazilian species are described and figured by Perty, in the Delectus Animalium BrasU'uv, in which many new genera are proposed for their reception. Another very singular species, with exceedingly long legs, is described by Mr. Hope, in the Linnaan Transactions, vol. xvii., under the name of Dolichoscelis Haworthii.) The second tribe of the Arachnida holetra is that of the Acarides, which has occasionally chelicerae, but they are simply composed of a single pincer, either didactyle or clawed, and hidden in a sternal lip. Sometimes there is a sucker, formed of lancet-like plates united together ; or the mouth consists merely of a cavity, without any other apparent pieces. This tribe is composed of the genus Acarus (Linn.),— The majority of the species of which are very minute, or almost microscopical. They are universally dis- tributed. Some are wanderers ; and, amongst these, some are found under stones, leaves, the bark of trees, in the ground, the water, or upon provisions, such as flour, dried meat, old dry cheese, and upon putrid animal matters. Others subsist as parasites upon the skin, and in the flesh of different animals, often greatly weakening them by their excessive multiplication. The origin of certain diseases, especially the itch, is attributed to them. It appears, from the experiments of Dr. Galet, that the Mites of the human psora, placed upon the body of a perfectly healthy individual, will inoculate him \\ith the serus of that disorder. Other sorts of mites are also found upon insects ; and many beetles, which subsist upon cadaverous substances or excrement, are often entirely covered with them. They have even been ob- served in the brain and eyes of Man. The Mites are oviparous, and exceedingly prolific. Many of them are born \rith only six feet, and the two others are developed a short time afterwards. The tarsi are • Trombidium tongipeg, Herra., is 6fjurcd with ten legs, the anterior being very long, but it is described as having only eight.

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