Vol. IX, No. 6.] The Polyzoa of the Lake of Tiberias. 225 
[V.S.] 
F. sultana (typical) is found all over Europe, in the West- 
ern Himalayas, in North America, and probably in North 
Africa ; possibly also in Natal. F. australiensis! from New 
dard, but the chief characters on which he bases his diagnosis 
Fredericella from Australia. 
F. sultana jordanica has only been found in the Lake of 
Tiberias and in the R. Jordan at its exit therefrom. 
F, sultana indica, although scarce, is apparently of general 
distribution in the Indian Peninsular area. 
F, sultana duplessisi was obtained from considerable 
depths in the Lake of Geneva. It is doubtful whether it is 
more than a phase of the typical form that lives free in mud. 
The only specimen I have seen supports Loppens’s contention? 
that it only differs from the typical form in that it is not fixed 
to any solid object; but this specimen, which was shown me 
r. C. Rousselet in London, was imperfect, and no stato- 
blasts have as yet been discovered. 
n October, 1912, I found F. sultana jordanica abundant 
on the lower surface of stones round the edge of the Lake? 
of Tiberias. I also noticed many dead colonies in a similar 
rar 
id not obtain specimens below 8 metres. I could find none 
free in mud; but some of the stones on which old but 
apparently vigorous colonies grew were half buried in the 
dense silt that covers the bottom of the lake where it is not 
shallows of the lake, as soon as it was exposed by a stone 
being turned over. : 
ree-swimming larvae of Fredericella were obtained among 
weeds at the edge of the lake on several occasions in October, 
and others were produced by colonies living in a small aqua- 
rium. They were about 0-9 mm. long and of a milky white 
! Proc. Linn. Soc. N. S. Wales XXXIV, p. 489 (1909). io 
2 Fide Zschokke, Die Tiefseefauna der Seen Mitteleuropas, p. 
(1911). : ; 
3 Cf. Barrois, Rev. biol. Nord du France vi, p. 289 (1894). 
