A revision of the adult tapeworms of hares and rabbits / by Ch. Wardell Stiles.
- Charles Wardell Stiles
- Date:
- [1896]
Licence: Public Domain Mark
Credit: A revision of the adult tapeworms of hares and rabbits / by Ch. Wardell Stiles. Source: Wellcome Collection.
10/138 page 152
![que la poclie peniale soit situ6e exactemeiit en son milieu; le p^nis, qui est trts long, dficrit done pour sortir line courbe accentuee. La saillie que ce dernier organe peut faire en debors est considerable. Le dfiveloppement de la poebe p&niale imprime des modifications particulieres a la forme de cet animal. La poebe peniale occupe d’abord la plus grande partie de l’anneau; par suite de la rapidity de son developpement, qui marcbe beaucoup plus vite que celui du reste de l’anneau, elle forme, sur le bord, une saillie tres forte qui s’efface a mesure que l’anneau grandit. La symdtrie se trouve ainsi retablie, mais le developpement des osufs fait bientot disparaitre completement l’enorme poebe peniale. Les forts grossissements permettent de voir les ceufs; dont les caracteres sont ceux des ceufs des Taenias inermes [p.242] vrais; leur appareil pyriforme est tres developpe. Les muscles longitudinaux sont gros et forment une zone continue et peu epaisse. La zone de proliferation est tres etendue et sous-jacente aux ventouses. Blanchard in 1891 found the same form in Depus variabilis and determined it as an Anoplocephala. Railliet in 1893 transferred it to his genus Andrya. Through the kindness of Blanchard, I obtained a number of his speci- mens upon which the following details are based: The worms attain 10 mm. in length by 2 mm. in breadth. The head is unarmed, nearly square when viewed en face, measuring about 0.78 to 0.88 mm. broad; it sits like a knob on the end of the strobila, from which it is sharply defined. No rostellum was visible. The four suck- ers are powerful, having a diameter of nearly 0.4 mm. Neck absent segmentation beginning immediately back of the head; as many as 28 segments are present in some individuals. The anterior segments are much broader than long and somewhat asymmetrical; the posterior segments may measure 2.24 mm. broad by 0.8 mm. long; in some cases they become nearly as long as broad. The genital pores are unilateral and dextral. The reproductive glands are confined to the anterior third of the worm, while the posterior two-thirds are occupied by the uterus. The genital pore becomes almost or quite obliterated upon the atrophy of the glands. The testicles are confined entirely to the aporose side of the segment, as is the case with Anoplocephala mamillana and A. transversaria. This parasite is very closely allied to A. mamillana of the horse. From the descriptions of former authors and from my own studies, I propose the following as a revised specific diagnosis: Diagnosis.—Anoplocephala wimerosa (Moniez, 1880), B. Blanchard, 1891: Strobila attains 10 mm. in length by 1.5 to 2.25 mm. in breadth, and contains from 10 to 28 segments which are always broader than long; proximal segments often asymmetrical in outline. Distal seg- ments attain about 2.25 mm. broad by 0.8 mm. long, rarely becoming nearly as long as broad. Head unarmed, nearly cuboid, measuring 0.7 to 0.88 mm., and sits like a knob on the end of the strobila; rostellum not observed; suckers 0.4 mm. in diameter, prominent, rounded, open- ing cliagonally forward; posterior lobes absent. Neck absent. Gem tal pores unilateral, dextral. The sexual glands are confined to the](https://iiif.wellcomecollection.org/image/b28058124_0010.jp2/full/800%2C/0/default.jpg)
