. Elementary text-book of zoology, general part and special part: protozoa to insecta. Animals. lilJSMATODA. 819 bryonic development, the contractile, usually ciliated embryos* (fig, 255, a), which already possess the first rudiments of an excretory system and more rarely a sucker with a mouth and alimentary canal, leave the egg and wander about independently in search of a new host. The latter is, as a rule, a snail, into the interior of which they pene- trate and there become transformed into simple or branched S'])orocysts (without mouth and alimentary canal, fig. 255, c), or into Reclice (
. Elementary text-book of zoology, general part and special part: protozoa to insecta. Animals. lilJSMATODA. 819 bryonic development, the contractile, usually ciliated embryos* (fig, 255, a), which already possess the first rudiments of an excretory system and more rarely a sucker with a mouth and alimentary canal, leave the egg and wander about independently in search of a new host. The latter is, as a rule, a snail, into the interior of which they pene- trate and there become transformed into simple or branched S'])orocysts (without mouth and alimentary canal, fig. 255, c), or into Reclice (with mouth and alimentary canal, fig, 255, d). These give rise, by means of the so-called germs [cells lying in the body cavity of 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 Claus, Carl, 1835-1899; Metcalf Collection (North Carolina State University). NCRS. London, Swan Sonnenschein
Size: 1310px × 1906px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectanimals, bookyear1892
