. Animal parasites and messmates. Parasites. 128 ANIMAL PARASITES AND MESSMATES. Fleas differ much in size, according to the places which they inhabit. Duges, of Montpellier, gives us a curious instance of this. He devoted himself to re- searches on the zoological characters of this genus, studying the four species which are the best known, the Pulex irritans of man, Pulex canis of the dog, Pulex musculus of the mouse, and Pulex vespertilionis of the bat. Fleas of a brown colour, almost black, and of enormous size, are commonly met with on the sandy shores of the Mediterranean, at least, in th
. Animal parasites and messmates. Parasites. 128 ANIMAL PARASITES AND MESSMATES. Fleas differ much in size, according to the places which they inhabit. Duges, of Montpellier, gives us a curious instance of this. He devoted himself to re- searches on the zoological characters of this genus, studying the four species which are the best known, the Pulex irritans of man, Pulex canis of the dog, Pulex musculus of the mouse, and Pulex vespertilionis of the bat. Fleas of a brown colour, almost black, and of enormous size, are commonly met with on the sandy shores of the Mediterranean, at least, in the neighbour- hood of Cette and Montpellier; they are more than half as large as a common fly. These are human fleas, and their presence on the sea-shore during the heats of summer is due solely to the great number of bathers of both sexes and of all classes, which lay their clothes down there. If at some future day these insects were to be placed in the rank of surgical species, it would be. 20.—Human Flea (Pulex irritans), after Blanchard. necessary to resort to those shores in order to procure them; and we might suppose that, by judicious crossing, we might soon produce races that would be of real service; as yet, however, the therapeutic art has had. 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
