29. The Polyzoa of the Lake of Tiberias. 
By N. AnnanpDae, D.Sc., F.A.S.B. 
(Published by permission of the Trustees of the Indian Museum.) 
(Plate VII, figs. 1, 2.) 
Although a careful search for Polyzoa was made and a 
large number of specimens obtained, only two species are repre- 
sented in my collection from the Lake of Tiberias. I have 
called them 
Fredericella sultana blasted subsp. nov., 
and Plumat tella auricomis, 
one eS character from any other species hitherto criti- 
cally examin 
Fredericella sultana jordanica, subsp. nov. 
This race differs from the a Fredericella sultana 
(Blumenbach) in the neaat tty characters :— 
1. Even when wing pate the _—, — not 
form free Ep raunhes of more than two zooec 
2. The ectocyst is usually quite colourless, bat in old 
colonies the covering of some zooecia situated in the 
oldest part is often thick and dar 
3. The zooecia are never circular in cross-section but 
always possess a ie | dorsal keel containing a 
longitudinal furrow 
These characters are not, in my opinion, oa specific value, 
but as they are constant in a large of specimens 
examined both in the a the sees ahr: they may be 
arule they are distinctly flattened on the lower surfac 
keel and furrow are particularly well marked on © old oes, 
. 
