28, Note on bi Sponge-Larva from the Lake of Tiberias. 
By N. ANNANDALE, D.Sc., F.A.S.B. 
(Published by permission of the Trustees of the Indian Museum.) 
(Plate VII, fig. 3.) 
In a small aquarium which I kept at Tiberias I found on 
October 22nd certain little organisms which I took at the time 
for the larvae of Phylactolaematous polyzoa. As they differed 
proved them to be sponge-larvae, and as Nudospongilla ma 
was the only sponge living in the aquarium and as sponges of 
the species were actually full of embryos at the time in the 
lake, there can be no doubt that the larvae belonged to that 
species. 
The larvae were in life of a milky white colour, with a 
more opaque patch (representing the solid part of the organ- 
ism) clearly visible with the aid of a hand lens at one end. 
A 
though they did not gyrate on their longer axis as the larvae 
of Phylactolaemata usually do, Their form was very broadly 
ovoid, approaching the spherical. The broader end was direc- 
Single org ut course the polyzoon is much more 
highly organized than the sponge at the time each is set free 
e N al ppa is, in the case of pre- 
served specimens, about 0-44 mm. long by : 
little more than half of the bladder-like body is hollow, the re- 
mainder being filled with the primitive dermal cells. Amongst 
these latter certain cells have already taken on the function of 
