Vol. XI, Nos. 10 & 11.] The Fauna of the Jordan System. 445 
[NV.S.] 
Porifera and Coelenterata. 
Five fete of sponges ! have been found in the Lake of 
Tiberias 
Subfamily Tai decir 
Ephydatia fluviatilis syriaca; Topsent. 
Subfamily Potamo 
poe i earteg oe Annandale. 
és reversa, Annandale. 
mappa, 
Cortispongilla barroisi (Topsent). 
All these sponges are endemic either in the Jordan system 
or in Syria and Palestine, while the genus Cortispongilla is 
known only from the lake. 
The subfamily Spongillinae is found all over the world 
(except probably in Antarctic region) and includes, accord- 
ing to the system I have adopted, all the Spongillidae ri 
produce well-developed and elaborate gemmules. The 
Ephydatia i is also practically cosmopolitan, but is siege rapes. 
sented in temperate climates than in tropical on E. fluvi- 
atilis occurs itself, or is represented by very closely related 
species in most regions, by H. meyeni in India and Sumatra, 
by Z. japonica in Japan and North America feliere the typical 
form also occurs), and by several races or allied species in 
Lake Baikal, Australia, etc. Gobcian that seem to be no 
more than local races occur the Himalayas, in Siberia 
and in §. Africa as well as in ‘Bytia and Palestine, and the 
typical form, with several varieties, is widely distributed 
in the Holarctic pate oreover, a closely allied species, 
e 
+ Page id In general terms it may be hese _that, 
these distinctions fo not hold if al the beet 2 chy local races — 
allied species are examined, and it is extremely ten 
not impossible to say to which | species some of the subordi- 
nate oe ines be referred. —- 
syriaca is more different — the typic sin 
fluviataiis eras I realized when preparin account oO . e 
Specimens in my collection. In his Sisal description Top- 
te ee a arnt ae sie VL Si ew 
1 Annandale, Journ. As. Soc. Bengal (n.s.) IX, pp. 57-88, pls. ii-v 
(1913). 
