A revision of the adult cestodes of cattle, sheep and allied animals ... / by C.W. Stiles ... and Albert Hassall.
- Charles Wardell Stiles
- Date:
- 1893
Licence: Public Domain Mark
Credit: A revision of the adult cestodes of cattle, sheep and allied animals ... / by C.W. Stiles ... and Albert Hassall. Source: Wellcome Collection.
48/174
![species, and it seems doubtful whether (1 mclin’s reference is to dentieu- lata. Gurlt (3) obtained Piulolphi’s specimen and gave two figures, which are copied (Plate y, Figs. 4, 5). Oreplin (4) does not believe that Carlisle’s drawings refer to T. den- ticulata. Mayer’s drawings (Analeeten f. verg. Anat., 2. Sam ml.. Figs. 4, 5) he thinks are T. expansa, and he is skeptical whether Camper’s and Havemann’s specimens were T. denticulata. Creplin himself obtained Kudolphi’s original specimens, and says in regard to them that there was only one specimen provided with a head; this specimen measured l-2;/ long. The head was rather four-cornered, and sat like a knob on the end of the anterior cone-shaped portion; the suckers . formed the blunt corners of the head and opened directly in front (Plate v, Fig. 5). The portion immediately following the head was wrinkled, but it was not clear whether these wrinkles represented true segments, hence it was doubtful whether a neck was present or not; this portion widened very rapidly. All the segments were very short; the lateral edges were convex; the posterior edge covered the following segment for some distance. The broadest segments lie had were about 4 wide by V long, thick and bloated. Double pores were present. These were situated immediately behind the posterior edge of the next anterior segment, with the exception of a fete cases where they were nearer the middle;* from the pores the lemniscus (cirrus) protruded; the latter was short, thick, and rather conical, on the end truncate. Creplin then describes the ova with the pyriform apparatus. As diagnosis of T. denticulata he gives the following: T. capitis tetragoni, parvi osculix angulos ipsius efficientibus, magnis, antrorsum apertis, collo subnullo, articulis omnibus crassis, celcriter insigniterque latitudine, panlum longitudine crescentibus, aiiteiioribus itleo brevissimis, reliquis omnibus perbrevibus atque admodum latis, marginibus liorum lateralibus convexis, postieo protracto et itasequentis artieuli partem anteriorom eimnncirca late tegente, fora- minibus artieulorumlatiorem (etlemniscis) marginalibus o]>positis seeuudis. (Artic- uli postici iiiQogniti. Ova globiformia.) Dujardin (5), Diesing (6), Davaine (8), and Ziirn (9) do not add any original observations on T. denticulata, but give very short diagnoses. Baillet (7) states that T. denticulata measures 35 to 40 or even 78tm in length. He gives the measurement of the eggs as 0.09-0.095nn, which, as Moniez has already pointed nut, is an error. In his descrip- tion there is little which aids us in determining this species. Perroncito (10) considers denticulata rather as a variety of expansa than as a separate species, but it is evident from his figures and descrip- tion that he did not have a true denticulata. before him. His figures seem to me to resemble expansa, while a part of his description applies equally well to expansa and jpianissimo-. *The itnlb'H are mine. From my drawing of Rudolplivs type (Fig. 6) it is evident tlmt. Creplin made liis statement on loose segments, and mistook the anterior for the posterior edge.—C. W. 8.](https://iiif.wellcomecollection.org/image/b28122604_0048.jp2/full/800%2C/0/default.jpg)
