. Elementary text-book of zoology, general part and special part: protozoa to insecta. Animals. 336 \EriiIES, has a very irregular shape; -while that form which inhabits domestic animal3, E. scoliciparicns, more frequently retains the form of the simple vesicle. Finally these echinococcus cysts frequently remain sterile, in which case they are called Acejuialocyxts. Another and indeed pathological form is the so- called multilocular Echinococcuf, which was for a long time taken for a colloid cancer. It is also found in Mammalia (in cattle), and here presents a confusing re- semblance to a mass
. Elementary text-book of zoology, general part and special part: protozoa to insecta. Animals. 336 \EriiIES, has a very irregular shape; -while that form which inhabits domestic animal3, E. scoliciparicns, more frequently retains the form of the simple vesicle. Finally these echinococcus cysts frequently remain sterile, in which case they are called Acejuialocyxts. Another and indeed pathological form is the so- called multilocular Echinococcuf, which was for a long time taken for a colloid cancer. It is also found in Mammalia (in cattle), and here presents a confusing re- semblance to a mass of tubercles. The echinococcus disease {hydatid plagne') was widely spread in Iceland. This disease likewise seems endemic in many places in Austi'alia. T. (Microtaenia). The Cysticercoid foi-m is small, and has but little fluid in the small portion which corresponds to the vesicle. The head is small, but has a small club- shaped or proboscis-like rostellum, and is furnished with weak hooks. The eggs are provided with several membranes. The emb]:70 is usually furnished with large hooks. The Cysticercoid stages live prin- cipally in Invertebrates (in Slugs, Insects, etc.), and more rarely in cold-blooded Vertebrates (the Tench). T. cucumerina Bloch, in the intestine of dogs (house dogs). The Cysticercoid is entirely without the caudal vesicle, and lives (according to Melnikoif and R. Leuckart) in the body cavity of the Dog-louse (^Trichodectes canis). The infection with the Cysticercoids takes place when the dog swallows the parasites which are annoying him, while the para- sites swallow the eggs contained in faeces adherent to the hair of the dog. Nearly allied is T. ellljytica Batsch. in the intestine of the Cat, occasionally in that of Man. T. nana Bilh. v. Sieb. in the intestine of the Abyssinians, hardly an inch long. T. ilavopunctata Weinl. in the human intestine' (North America). The Cysticercoids of the Meal-worm are probably developed into tape-worms in the intestines
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectanimals, bookyear1892
