PROCEEDINGS 
OF TIE 
GENERAL MEETINGS FOR SCIENTIFIC BUSINESS 
OF TIIK 
ZOOLOGICAL SOCIETY OF LONDON. 
PAPERS. 
1. Contributions to the Anatomy and Systematic Arrange- 
ment of the Cestoidea. By Frank E. Bepparp, M.A., 
D.Se., F.R.S., F.Z.S., Prosector to the Society. 
XII. Furruer OBSERVATIONS UPON THE GENU s<qgonian [i In 1Sti, 
Urocystipium BEDDARD. / e “an \ 
pS 
[Received November 12, 1913: Read February 3, 19144 M AY 6 
(Text-figures 1-9.) 
1 : 
Stional MuseY= 
Urocystidium : LSE, Page ar ae 
INCE CU ROUTAN nn nbdeoe Guay -usoseeb coo eas nooECUECondbemeoneeeneae 1) 
SOM MnOL MMe nena er yetahe arc matuomeeecneacereaandssaaciyataiea ory wd 
SSUTTUIN ARV geR sere See neeieh nick, Wan ati a ouniuiscaiossiesines, csi nonesayh OU 
In December 1912* the Society published a communication 
of mine upon a tapeworm from the Musquash (iber zibethicus), 
of which I was able to describe both the immature and mature 
stages which lived side by side in the liver in cavities which are 
pr obably to be regarded as dilated portions of the liver-ducts. In 
May of last year I found some more examples of the same or 
a closely allied worm in the same situation in another specimen 
of the Musquash. 
Tn this second case of infection the parasites, as in the first 
case, consisted of asexual and sexual examples, thus confirming 
my original discovery that the two generations of the worm 
lay side by side in the same organ of their host. The asexual 
* P,Z.S, 1912, pp. 822-850. 
Proc. Zoou. Soc.—1914, No. I. 1 
