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.
38/138
![Bielim1 * in 1881 was the first to clearly define this form, which he named Dipylidium leuokarti, with the following specific diagnosis: Kopf hakenlos, sehr klein, etwa 0.5 mm. breit, mit 4 fiachaufliegenden Sang- n lip fen, nickt abgesetzt gegen den Hals, welclier mit lanzettformiger Verbreiterung in die Gliederkette Ubergeht. Geschleclitsoffnungen beiderseits im hinteren Vier- theil des Proglottisrandes., Glieder trapezformig, aucli im gestrecktesten Znstande noch breit, fiir gewohnlicli aber etwa 3-6 mal breiter als king. Lange im ges- treckten Zustande bis 80 cm., Breite der reifsten Glieder bis 1 cm. Die Strobila hiiufig dnrch Liingsfalten der Haut wie gestreift. Wobnthier: Lepus cuniculus. In the anatomical discussion, and in his figures, Bielim brings out the following points: The head measures 0.5 mm. broad by about 0.166 mm. thick; neck moderately long, its distal end nearly twice as broad as its proximal eud; 500 to 750 proglottids present in the strobila; posterior edge of segments extends prominently over the next follow- ing segment, so that the side of strobila appears serrate. Male organs: Testicles 50 to 60 p in diameter, arranged in two groups in each segment, one on each side of the median field near the ovary; cirrus pouch small, sacuiar, contains a small vesicula seminalis and the retracted and coiled penis. Female organs: The female anlagen appear as early as the twenty-fifth segment; female glands quite close to ventral canal; uterus same as in C. pectinata. Excretory system : Circular canal said to be absent from the head; a median canal forms a dorsal and a ventral loop between the suckers; each loop branches, one forming the two ventral canals, the other the two dorsal canals; the ventral canals are connected by the transverse canals in each segment, but in the posterior segments a network of canals supplants the ordinary transverse canals; a second canal system—evidently the dorsal canals—is described as possessing a thick muscular layer. It is figured as lying between the ventral canal and nerve. Ova, 67 to 70 ja in diameter. Of more than 150 wild rabbits, only 10 to 12 were not infested with this parasite. (Abstract.) Neumann2 in 1888 placed tlie worm iu the genus Taenia; later3 lie reverted to Dipylidium and recorded a worm from tlie domesticated rab bit which he considered identical with this form. Bailliet in 1890 found this worm in France and proposed the name Tcenia ctenoides in place of T. leuekarli (Kiehm, 1881), Neumann, 1888 [nec Krabbe, 1869J. K. Blanchard4 in 1891 placed this species in the genus Moniezia, translating Bieliin’s diagnosis. Bailliet in 1893 transferred the species to his genus Ctenotcenia. I have examined one of Biehm’s originals, and, through tlie kindness of B. Blanchard, I have received several tapeworms under the label “ Tcenia pectinata, Lapin domestique, 10, 8, 89. G. Marclial. Hucque- liers pres Montrei—[?] sur mer.” These worms agree with Biohm’s specimens of Dipylidium leuclcarti. One of Moniez’s specimens labeled “Ayores” is also a D. leuclcarti. Upon the material at my disposal and Biehm’s anatomical discussion I base the following revised specific diagnosis: !Stud. an Cestoden. Zeitschr. ges. INaturw., 3 ser., VI, p. 200; pp. 566-575. - Traite des maladies parasitaires, Paris, 1888, p. 426. 3Trait6 des maladies parasitaires, Paris, 2d ed., 1892, p. 461. Parasites and Parasitic Diseases of Domesticated Animals, London, 1892, p. 473. 4 Mem. Soc. zool, France, IV, p. 187; pp. 450-451.](https://iiif.wellcomecollection.org/image/b28058124_0038.jp2/full/800%2C/0/default.jpg)
