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.
20/138
![a remarkable tendency to unilaterality can not, unassociated with other characters, be looked upon as establishing the genera as distinct. In the preliminary note to this revision, I described two American parasites as provisional members of the genus Andrya, reserving opin- ion as to the validity of the genus and calling attention to some important differences in the American and German leporine single- pored forms. Since the publication of my note,1 I have received a copy of a recent paper by Meyner describing two new species of cestodes, probably allied to the two forms of Bertia described by Blanchard, and through the kindness of Geheimrath Leuckart I have obtained one of the cotypes of Meyner’s Taenia (Bertia) mucronata. It will be necessary to consider these forms briefly in connection with the leporine parasites. Meyner evidently accepts Bertia only as a subgenus of Tcenia; as Bertia has, however, absolutely no generic relations with Tcenia, I now change his specific combinations from Tcenia (Bertia) mucronata and T. (B.) conferta to Bertia mucronata and B. conferta. Meyner discusses the anatomy of these two forms in detail, and from his account the following descriptions may be taken as specific diagnoses : BERTIA MUCRONATA (Meyner, 1895), Stiles, 1896. (Plate IX, figs. 4-5.) 1895, Tcenia (Bertia) mucronata, Meyner, Zeitschr. f. Naturw., LXVIII, (5 ser., VI), pp. 1-86, pi. 1, figs. 1-7. Diagnosis.—Bertia mucronata (Meyner, 1895), Stiles, 1896: Strobila dagger-shaped, attains 140 mm. or more long by 8 to 10 mm. broad, serrate, imbricate, whitish yellow. Head, 0.34 to 0.714 mm. broad, apex nearly square, rostellum wanting; suckers oval 0.255 mm. broad, 0.2 mm. deep. Neck short, not sharply separated from head. Genital pores irregularly alternate. Male organs: Testicles appear in one hundred and twentieth segment, numerous, 75 to 100 in diameter, crowded together in [antero ]dorsal portion of median field. Yas defer- ens dorso-anterior of vagina; cirrus-pouch not mentioned. Female organs: Glands in pore side of median field; vagina long; receptaeu- lum seminis globular; uterus single, transverse, at first a simple tube appearing in about one hundred and thirtieth segment; eggs enter it in three hundred and fiftieth segment and blind pouches are formed. Ova 36 with three membranes; pyriform body 15 to 16 ja broad; oncosphere 13 to 14.4 ja. Three longitudinal nerves each side of seg- ment, of which middle nerve is the largest. Dorsal canal dorsal of ventral canal. Genital canals pass dorsally of longitudinal canals and longitudinal ventral and main nerves, but ventrally of dorsal nerve. Calcareous bodies 4.9 to 18.4 //, more numerous in cortical layer; about 150 visible in transverse section of scolex, 10 to 12 visible 10 mm. from anterior extremity, 400 to 500 in transverse section of distal segments. ‘Notes on Parasites—38: Preliminary note to “ A Revision of the Adult Leporine Cestodes/’ Vet. Mag., 1895, II, p. 341-346.](https://iiif.wellcomecollection.org/image/b28058124_0020.jp2/full/800%2C/0/default.jpg)
