. The animal kingdom, arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy. Zoology. 470 ARACIINIDA. terminated in various ways, according to their habits. Some of these insects {Acarides, Latr.) have eight legs, fit only for walking, and chelicerae. Trombidium, Fabr., lias the chelicerae terminated by a moveable claw; palpi projecting-, pointed at tip, with a moveable appendage or finger beneath the extremity; two eyes, each at the top of a small fixed peduncle. T. holo- sericeum, Fabr., very common in gardens during spring, of a bl
. The animal kingdom, arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy. Zoology. 470 ARACIINIDA. terminated in various ways, according to their habits. Some of these insects {Acarides, Latr.) have eight legs, fit only for walking, and chelicerae. Trombidium, Fabr., lias the chelicerae terminated by a moveable claw; palpi projecting-, pointed at tip, with a moveable appendage or finger beneath the extremity; two eyes, each at the top of a small fixed peduncle. T. holo- sericeum, Fabr., very common in gardens during spring, of a blood-red colour, with the abdomen nearly square, and narrowed behind. A much larger species (7'. cinctorium, Fabr.) inhabits the East Indies, and emits a red dye. Eryt/ineits, Latr., has the chelicerae and palpi of Trombidium, but the eyes are sessile, and the body not divided. E. phalangioides, Latr. Gamastis, Latr., has the chelicerae didactyle, and the palpi projecting, distinct, and filiform. In some, the body is covered entirely, or in part, by a scaly skin, but in others it is entirely soft. Some of the latter species live upon different birds and quadrupeds. Others, as the .Icarus telarius, Linn, [or the Red Spider of the hot-houses], form, upon the leaves of various vegetables, especially upon those of lime-trees, very fine webs, which injure them greatly. This species is reddish, with a black spot on each side of the abdomen. C/ieyletus, Latr., has didactyle chelicerae j but the palpi are thick, arm-like, and terminated by a sickle-shaped joint. A. erittlilus, Schr. Oribata, Latr. (Notaspis, Herm.), has the chelicerae also didactyle ; the palpi very short, or concealed; the body covered with a hairy, scaly skin ; feet long, or moderate. The front of the body is advanced like a beak. Found upon stones, trees, in moss, &c. They creep but slowly. Uropoda, Latr., has, from analogy, forceps-like chelicerae; palpi not projecting; body covered with a scaly skin; legs short
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectzoology, bookyear1854
