7. Aquatic Oligochaeta from the Lake of Tiberias. 
By J. Srepuenson, D.Sc., Mayor, I.M.S., 
Professor of Biology.in the Government College, Lahore. 
N. Annandale, of the Indian Museum, Calcutta 
several other forms, which were cel areca immature and 
therefore unidentifiable. These comprise one Enchytraeid, two 
Tubificids, and one Lumbricid (Hisenia or Helodrilus). 
Criodrilus lacuum, Hoffm. 
In wet mud under stones at edge of lake, near Tiberias, 
Palestine; October 18, 1912, October 24, 1912: in a similar 
situation near Mejdal (Magdala), on Lake Tiberias: October 25, 
1912. A number of specimens, both mature and immature. 
is worm has previously been recorded from Syria and 
Palestine by Rosa (Boll. Mus. Torino, vol. viii, no. 160, 1893), 
whose specimens were quite typical. The specimens in the 
present collection which I assign to this species show, however, 
certain peculiarities and a short description is ’ therefore 
appended. 
Length 6-7 ins.; breadth 4mm. at broadest part, diminish- 
‘aie blue wee near the posterior end. The shape of the 
So ikata s 303. 
Prostomium wiganeeem anus dorsal. The gens 
= may be broken off; one specimen, whic gh 
mmature, probably ee to ‘this species, there were two 
ponte otige near the posterior end, one of which, at one part 
of the circumference, was deep enough to open into the body- 
cavity. The constrictions are exaggerations of the inter- 
segmental furrows, and would seem to represent an attempt at 
autotomy. 
The setae are closely paired ; te is greater than aa 
pepe the centre of the slit is a little outside the line of 
ae b. The papilla reaches on its outer side nearly half way 
