DENDROSOMA RADIANS, EHRENBERG. 
147 
seems to be pushed out wherev'er an opportunity occurs for 
one to reach a food supply. 
Text-fig. A. 
A specimen of Dendrosoma radians, attached to Cordylo- 
phora, from the Bridgewater canal, near Manchester, c.v. 
Contractile vacnoles. (jem. The “internal buds” or gemmula;, 
me. the long strap-shaped meganucleus, me', the meganucleus 
in the liase of attachment, showing at me", an irregular dis- 
tribution of its chromatin granules in the cytoplasm ; t. the 
test covered with dirt and foreign particles of various kinds. 
V. The so-called “external buds.” now shown to be a species 
of Urnula, ai'e seen at the extremity of some of the branches. 
The figure is semi-diagrammatic. The outline was drawui with 
the camera lucida from a very large, branched, living specimen, 
and the structural details filled in. 
The specimens from Birmingham differ in some respects 
from those found in the Bridgewater canal. The former 
