Vol. XI, he 10 & 11.) The Fauna of the Jordan System. 447 
[N.S] 
apparently endemic. Our present knowledge of the distribu- 
tion of the species is too slight to render this fact of any 
importance. 
Rotatoria. 
Two papers that deal in part with representatives of this 
group from the Lake of Tiberias have been published, one by 
Barrois and von Daday.! the other by Rousselet.2 The nomen- 
clature adopted in these two papers differs considerably, and 
ave no personal knowledge of the rotifers, I have in my 
list of the fauna adopted that given by Harring ® in his recent 
synopsis of the Rotatoria. 
None of the species found in the lake have any particular 
geographical interest. The rotifer-fauna, indeed, seems to be 
poor compared even with that of other lakes in Syria and 
Palestine, and all of the forms as yet recorded belong, accord- 
ing to Harring, to well known and widely distributed species 
Annelida. 
Only two species of leeches * are recorded with certainty. 
One of these represents a local race (concolor), common to the 
Jordan system and the R. Barada, of the widely distributed 
species Herpobdella (Dina) lineata; the other (Placobdella caten- 
_igera) is common in eastern Europe and western Asia. 
Three Oligochaete worms ° from the lake have been iden- 
tified, all belonging to the Megadrilli ; several Tubificidae and 
Enchytraeidae are represented in my collection, but all are 
named species, one [Helodrilus (Dendrobaena) lacustris] is known 
only from the lake ; one [H. (D.) byblicus] only from Palestine 
and Syria; while the third (Criodrilus lacwum) is common in 
southern and eastern Europe n extraordinary extension of 
to the specific identity. 
It is thus clear that while the annelids of the Lake of 
Tiberias include a large proportion of forms endemic in Pales- 
tine and Syria and possibly some peculiar to the Jordan 
1 Rév. biol. Nord France VI, pp. 391-409 (1893-1894). 
2 Journ. As. Soc. Bengal Sars Pr p- 229. (1913). 
38 U.S. Nat. Mus. Bull. 81 (1913). i 
+ Annandale, Journ. As. Soc. Bengal (n.s.) IX, pp. 211-214 (1913.) 
6 Stephenson, ibid., pp. 53-56, and Rosa, Boll. Mus. Torino VIII, no. 
160, pp. 1-14 (1893). : 
é Rigshances Wee. Ind. Mus. X, p. 256 (1914) and Mem. Ind. Mus. V, 
p. 145 (1915). 
