Human cestoides : an essay on the tapeworms of man : giving a full account of their nature, organization, and embryonic development, the pathological symptoms they produce, and the remedies which have proved successful in modern practice / by D.F. Weinland ; to which is added an appendix, containing a catalogue of all species of Helminthes hitherto found in man.

  • David Friedrich Weinland
Date:
1858
Catalogue details

Licence: Public Domain Mark

Credit: Human cestoides : an essay on the tapeworms of man : giving a full account of their nature, organization, and embryonic development, the pathological symptoms they produce, and the remedies which have proved successful in modern practice / by D.F. Weinland ; to which is added an appendix, containing a catalogue of all species of Helminthes hitherto found in man. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

    71/120 (page 53)
    structure of its eggs, the situation of its genital open- ings, etc. golden-winged woodpecker, mentioned above, § 28, and probably many other insufficiently described species, the eggs of which have not yet been studied. — Gen. 2. Proteocephalus, Wkinl. (The name is derived from npwrev?, the ever-changing principle in the old Greek mythology, and «- (]>a\r), head.) The shape of the head of this genus is extremely changeable. There is no proboscis, nor hooklets. The eggs are provided with two shells, the outer shell being mucilaginous. These Taenioids live in reptiles and fishes. The type of the genus is Taenia ambigua, DuJAEDlN. Here belong Tcenia jilicollis and T. dispar. — Gen. 3. Ahjselminthus, ZEDER, in a confined sense including only the Tcenia cucumerina of the dog. Small spines, arranged in a series of rows, and these spines having a flat foot, characterize this genus. Its eggs have simple and very thin shells, and are deposited in lumps, a number of them glued together into an oval mass. There are other genera yet to be established in this subfamily, but the Taenioids which belong to them have not been sufficiently studied to permit a comparison of the characteristic features on which to base the genera. When applying this systematic review to the cmestion of which we first spoke in this note, we find that all species of Taenioids which live as ma- ture tapeworms in the human intestine, are peculiar to man ; further, that all these Taenioids belong, with one exception, to the subfamily Sclerolepi- dota; that the Tcenia solium belongs to the same genus with tapeworms found in dogs and other carnivorous animals; that two sorts of tapeworms of man, Tcenia mediocanellata and Tcenia nana, form, thus far, genera by themselves; finally, that only one tapeworm found in man belongs to the subfamily of Malacolepiclota, viz. Hymenolepis jlavopunctata, the congeners of which live in small insectivorous Mammalia. Of the five species of lar- val tapeworms found in man, only one (Cysticercus acanthotrias) is pecu- liar to man, and this has been found only once. The other four are met with also in domesticated Ruminants and Pachyderms and moreover in the liver, lungs, etc. of monkeys which are kept in captivity. There are but two mature Taenioids known as living in the intestines of monkeys, Tcenia rugosa and T. megastoma, both described by Diesing from alcoholic specimens. Their eggs or the structure of the uterus not being mentioned, we cannot place them in the above system. These worms came from South-American monkeys, belonging to the genus Ccbus, and those monkeys being noted insect-eaters, I would venture to predict that their tapeworms are Malacolepidota. The specimens described by Diesing are preserved in the splendid helminthological collection of Vienna, of the richness of which we may form an idea from the fact that within fifteen years not less than forty-five thousand Vertebrates have been dissected there, in search of Helminthes.