. Animal parasites and messmates. Parasites. TEANSMIGRATIONS AND METAMORPHOSES. 203 order to arrive again at the nasal fossae which are the first cradle of the family. We find occasionally between the feathers of some bii'ds tubercles of the size of a pea, and when we open them we see in each two similar worms, placed so that the stomach 6f one is applied to that of the other; this is the monostome of which we have spoken above. These worms are from three to four millimetres in length (about -13 in.), and are found in the titmouse, the sis- kin, the sparrow, the canary, and some other birds. A
. Animal parasites and messmates. Parasites. TEANSMIGRATIONS AND METAMORPHOSES. 203 order to arrive again at the nasal fossae which are the first cradle of the family. We find occasionally between the feathers of some bii'ds tubercles of the size of a pea, and when we open them we see in each two similar worms, placed so that the stomach 6f one is applied to that of the other; this is the monostome of which we have spoken above. These worms are from three to four millimetres in length (about -13 in.), and are found in the titmouse, the sis- kin, the sparrow, the canary, and some other birds. A worm very common in the intestines of the green frog is known by the name of Amphistomum stib-clavatiim. Its cercariee are usually found in an acephalous mollusc, Imown by the name of Cyclas cornea. That which. -\-- c- -i; !??? -y. 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 Beneden, M. van (Pierre Joseph), 1809-1894. New York, D. Appleton and Company
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectparasit, bookyear1876
