ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
191 
Tsenise of Amphibia.* — Dr. 0. Fuhrman draws attention to the 
paucity of our knowledge with regard to the tapeworms of Amphibia. 
He gives an account of T. dispar, which has already been made the sub- 
ject of some description by earlier writers. He also describes a new 
type which he calls Ichthyotsenia Lonnbergii. The single example which 
he has had in his hands was taken from the intestine of Nedurus 
maculatus. Although these two species are anatomically very different 
they have some characters in common. In both cases the scolex is 
armed in the same way and exhibits the same disposition of the two 
chief longitudinal trunks, and the same plexiform branched transverse 
anastomosis at the hinder end. So far as the reproductive apparatus 
is concerned they only agree in the irregularities in the orifices of the 
genital ducts and in the position of the female in front of the male 
organs. T. dispar has a number of peculiarities which account for its 
isolated position among the Tsenise, while the points already enumerated, 
as common to Ichthyotsenia, are all characters of the Tsenise of Fishes. 
We may add that like them T. dispar has no seminal vesicle. The 
external form, the characters of the muscle fibres, the small number 
of testes, the arrangement and form of the female gonads, and the 
structure of the uterus and oocysts are partly peculiar and partly rare 
phenomena in other representatives of the family. The anatomical 
structure of the reproductive apparatus of Ichthyotsenia Lonnbergii agrees 
completely with that of Callibothrium coronatum from the Dog-fish. The 
separation of the Fish Tsenise from other Tsenise and the formation of the 
new genus Ichthyotsenia by Lonnberg is completely justified. 
Ctenotsenia denticulata. | — Mr. C. W. Stiles and Mr. A. Hassall 
have compared segments of Rudolphi’s Tsenia denticulata with leporine 
parasites and find that T. denticulata contains two species of worms, one 
identical with T. Goezei Baird, 1853, and with Diplydium latissimum 
Riehm, 1881, the other with Ctenotsenia pectinata. They conclude that 
T. denticulata Rudolphi, 1804, is not a parasite of cattle or sheep, but 
that it is a leporine cestode of the genus Ctenotsenia, and contains Cteno- 
tsenia Goezei and Ctenotsenia pectinata. 
The authors point out that the time has now passed when specific 
determinations can be safely made from external form, and no statement 
relative to any species of cestode should be published unless the speci- 
mens have been examined microscopically. 
Distomum Westermanni.J — Dr. P. Sonsino directs attention to this 
fluke which Prof. Kellicott lately found (in Ohio) in the lungs of a dog. 
The species was first recorded by Herbert (1878) from a tiger, and was 
afterwards identified with a form which in Japan and the far East occurs 
in man, dog, and cat. Prof. Ward of Michigan has also found it in the 
cat. Thus its distribution is less restricted than was supposed. 
Rotatoria. 
Species in Rotatoria.§ — Herr Johann Sniezek has some useful re- 
marks on species-mongering in this group. He points out that in spite 
* Zool. Jahrb. (Abtli. Anat.), ix. (1895) pp. 207-26 (1 pi.), 
f Centralbl. f. Bakteriol. u. Parasitenk., l t0 Abt., xix. (1896) pp, 70-3. 
t Atti Soc. Tosc. Sci. Nat., ix. (1895) pp. 291-2. 
§ Biol. Centralbl., xv. (1895) pp. 602-5. 
