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.
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![1881, Tamia rhopalocephala, Riehm, Zeitschr. f. d. ges. Naturwiss., 3ser., YI, p. 200; 551-562, pi. v, figs. 1, 7-10, 18, vi, 1. 1891, Anoplocephala rhopalocephala (Riehm, 1881), R. Blanchard. Mem. Soc. zool. France, IV, p. 448. 1893, Andrya pectinata ([Goeze, 1782] Zeder. 1800), Railliet, Trait6 de Zool. m6d. et agric., I, p. 283. 1895, Andyra rhopalocephala (Riehm, 1881), Stiles, Yet. Mag., II, pp. 343, 344. I can find no evidence that Goeze (1782) had any single-pored forms before him when he described his Taenia pectinata. Zeder1 in 1800 rede- scribed what he supposed was Goeze’s species, but states that the pores were single. Riehm2 in 1881 considered Zeder’s species identical with the one now under consideration, and authors have followed him in this opinion. Zeder’s description appears to me, however, altogether too fragmentary to accept this view as proven; at the same time it is impossible to definitely disprove Rielim’s conclusion. Riehm3 in 1881 was the first to recognize Tcenia rhopalocephala as a distinct form; his revised diagnosis4 reads as follows: Kopf hakenlos, gross und keulenformig, mit stark vorspringenden, maclitigen Saugnapfen, scharf abgesetzt gegen den Halstlieil. Geschlcchtsoffnungen einfach im unteren Viertheil des Proglottidenrandes gelegen, meist durchgiingig auf derselben Seite. Glieder trapezformig, etwa eben so breit als lang. Lange im ausgestreckten Zustande 60—80 cm., Breite der reifsten Glieder wenig iiber 5 mm. Wohntliier: Lepus timidus. Blanchard5 in 1891 transferred Riehm’s species to the genus Anoplo- ccphala, while Railliet6 in 1893 took it as type of the genus Andrya. Railliet reverted to Zeder’s specific name, but I now adopt rhopalo- cephala on the ground that Zeder’s pectinata was not proposed as a name for a new species, but Zeder was under the impression that he was redescribiug Goeze’s form. Andrya rhopalocephala has not yet been recorded for this country. The following statements are based upon Riehm’s specimen (No. 1484, TJ.S.N.M.), mentioned on p. 155. The anlage of the genital canals and female glands appears earlier than the testicles. In the lateral third of the segment on the pore side the undifferentiated anlage of the canals may be distinguished in the distal portion of the segment, and at its median end it becomes widened to form the anlage of the female glands. The anlage of the canals gradually thickens while the iiortion destined to form the female glands becomes more or less distinctly separated from it. At a time when this apparent separation takes place, small, quite indistinct, points of cliroinatophile material appear in the aporose portion of the median field and form the anlagen of the testicles. The segment now 2Erster Nachtrag zur Natur. der Eingew., Leipzig, pp. 246-249. 2Stud. an Cestoden, Zeit. ges. Nat., 3 ser., VI, pp. 545-546, pi. v-vi. 3[Untersuchungen an den Bandwiirmern der Hasen und Kaninchen], Zeitschr. ges. Naturw., 3 ser., VI, p. 200. 4Studien an Cestoden, Zeitschr. ges. Naturw., 3 ser., VI, p. 551. 5M6m. Soc. zool. France, IV, p. 448. 6Trait6 de Zool. m6d. et agric., I, p. 283.](https://iiif.wellcomecollection.org/image/b28058124_0014.jp2/full/800%2C/0/default.jpg)
