. Cassell's natural history. Animals; Animal behavior. m rotary organ, cilia, or eye, antl it has a tail-like foot with two conical and short segments at the end. The mastex diU'ers from that of the ordinary kinds, and is very complicated. The animal is about â 5=yth of an inch in length. Another and smaller species (Taphrocampa antmlosa) has a fusiform annulose body with a forked tail, and there is no rotary organ. Moreover, the genus Balatro, which li\es upon the surface of Oligochete Worms, has neither rotary organs nor eyes, and the tail is bilobed. Several genera, such as , Ich
. Cassell's natural history. Animals; Animal behavior. m rotary organ, cilia, or eye, antl it has a tail-like foot with two conical and short segments at the end. The mastex diU'ers from that of the ordinary kinds, and is very complicated. The animal is about â 5=yth of an inch in length. Another and smaller species (Taphrocampa antmlosa) has a fusiform annulose body with a forked tail, and there is no rotary organ. Moreover, the genus Balatro, which li\es upon the surface of Oligochete Worms, has neither rotary organs nor eyes, and the tail is bilobed. Several genera, such as , Ichthydium, and Dasydites, have no mastax, nor eyes, nor trochal discs; but the body is furnished with bristle-like hairs, downy hairs, and cilia on the ventral surface : usually there ai-e two tail-like proiresses. They are minute, and are from ^A^th to ^^o^h of an inch in length, and would appear not to be Infusoria, but really Rotifera, allying the class to the Turbellarian Worms. The first family of the Rotifera is that of the Philodinidre, and they are free-swimming forms, which can also creep like Leeches, the ends of the body being alternately fixed and They have two wheel-like rotary organs, and the body is somewhat spindle- shaped, and very conti-actile, so that it can be formed into a globose shape, and the powers of extension are considerable. The tail end or foot is jointed like the slides of a telescope. The genus Rotifer belongs to this family, and the common Wheel Animalcule is Rotifer mdywris. It has a white fusiform body -^-it\\ to --^th of an inch long, gradually narrowed to the foot which has two liorn-like toes. The anterior part of the body has a proboscis ciliated at the end, and the two eyes are placed there. The wheels ai-e two in number, are round, and placed at the sides of the front part of the body. monola- Rotifer citrinus has a yellow body, and Rotifer tardns has the body deeply constricted "'cilis!^* into segments. The genus Philodin
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Keywords: ., bookcentury1800, bookdecade1890, booksubjecta, booksubjectanimals
