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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![Diagnosis.—Cittotcenia ctenoides (Railliet, 1890), Stiles, 1890. Stro- bila serrate may attain 80 cm. in length by 10 mm. in breadth; composed of 500 to 750 segments, which are always at least 3 to 5 times broader than long. Head unarmed, about 0.44 to 0.5 mm. broad by 0.10 mm. thick; no rostellum visible. Suckers 0.L7G ram. in diameter. Neek short and broad, or absent, segmentation beginning immediately back of the head. Genital pores double, situated in posterior half of margin. Male organs: Testicles arranged in two groups in lateral portion of median field; about 00 to 80 testicles to each group, 50 to GO n in diameter. Cirrus pouch small, 0.10 mm. long by 0.128 mm. broad; it does not reach the longitudinal nerve; contains the coiled and inverted cirrus and a small vesicula seminalis. Female organs: Ovary, vitello- gene, and shell glands agree in general with the same organs in 0. pectinata, but are situated much closer to the longitudinal canals; uterus agrees with that of C. pectinata, but appears to be rather more simple. Dorsal canal lies between ventral canal and nerve or dorsal of ventral canal. Yas deferens, vagina, and uterus extend from median field into lateral field dorsally of the longitudinal canals and nerves. Ova, 04 p in diameter; bulb of pyriform body, 20 p. Hosts.—European wild rabbit (Lepus cuniculus), by Riehm; tame rabbit (L. cuniculus domesticus), by Neumann, Railliet, and Marchal. Types.—Cotype, No. 1327, U.S.N.M. (from collection of Riehm). Typical specimens: No. 114, U.S.N.M. (from collection of Blanchard); Nos. 1449.4 and 1457, U.S.N.M. (from collection of Moniez); collection of Blanchard; collection of Moniez. Geographical distribution.—Europe: Saxony, by Riehm; France, by Neumann, Railliet, Marchal, Moniez. The Azores (collection of Moniez). CITTOTiENIA PRiECOQUIS (Stiles, 1895), Stiles & Hassall, 1896. (Plate XV, figs. 1-6.) 1895, Ctenotcenia prcecoquus [typographical error for prcecoquis'], Stiles, Veterinary Magazine, II, June, p. 345. Aug. 28,1895. 1896, Cittotcenia prcecoquis (Stiles, 1895), Stiles & Hassall, Veterinary Magazine, III, p. 407. Prof. Herbert Osborne, of Ames, Iowa, collected two specimens of tapeworms from the Pocket-Gopher (Gcomys bursarius), which he pre- sented to the Bureau of Animal Industry. The species is rather a difficult one to interpret, especially upon press preparations, aud the limited amount of material does not allow a minute anatomical analysis by means of sections, but sufficient characters can be given to enable one to easily recognize the form. The specimens measure about 40 mm. long and contain about 150 seg- ments ; the greatest breadth, about 5.5 mm., is reached about 10 mm. from the distal extremity; the distal 10 mm. becomes narrower. Head not very distiuct from the strobila, 0.43 mm. broad by 0.32 mm. long. No rostel- lum visible; no hooks present; sucker 0.10 mm. long by 0.128 mm. broad.](https://iiif.wellcomecollection.org/image/b28058124_0039.jp2/full/800%2C/0/default.jpg)
