. Fourteen weeks in zoology. Zoology. 236 SUBKINGDOM AETICULATA. respiration is effected in some by gills and in others by the whole surface of the body. Eyes are occasionally found. Worms exist everywhere, in salt and fresh water, and on land, and as parasites in man and other animals. â s. cc Mostly aquatic. Mostly (BOUND, parasitic, j,^^^^ Without ciliated discs, With ciliated discs. With spines. Without spines. Annulata, Nereia. Rotatoria, Rotifer. Acanthocephalix, Echinorhynchm. Nematelminihes, Trichina. Platyelminthes, Tape-worm, etc ORDER ANNULATA. General Characteristics.âThe Annulata
. Fourteen weeks in zoology. Zoology. 236 SUBKINGDOM AETICULATA. respiration is effected in some by gills and in others by the whole surface of the body. Eyes are occasionally found. Worms exist everywhere, in salt and fresh water, and on land, and as parasites in man and other animals. â s. cc Mostly aquatic. Mostly (BOUND, parasitic, j,^^^^ Without ciliated discs, With ciliated discs. With spines. Without spines. Annulata, Nereia. Rotatoria, Rotifer. Acanthocephalix, Echinorhynchm. Nematelminihes, Trichina. Platyelminthes, Tape-worm, etc ORDER ANNULATA. General Characteristics.âThe Annulata have red blood, a nervous system resembling that of insects, and the alimentary canal extending the whole length of the body. The body is elongated and the segments are distinctly marked. Some are furnished with bristles, others are with- out ; some have gills, others have none. Fig. NerAs pelagica. a, Male; 6, Female. Natural size. The Nereidse have both bristles and gills arranged on each side of the body, and the mouth is armed with powerful jaws. The Serpulidse (see Pig. 393) are marine, with gill-tufts around the head. Some live in calcareous tubes variously contorted, adhering by the closed end to oyster-shells, etc., but protruding from the open end brilliantly-colored, fan-like appendages, with one dilated to close the shell when the. 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 Steele, Joel Dorman, 1836-1886. New York, Chicago [etc. ] A. S. Barnes & Company
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectzoology, bookyear1872
