BIGELOW: COAST WATER EXPLORATION OF 1913. 309 
The stolon commonly runs along its support nearly in a straight line 
and it never forms a very complicated network. From the stolon the 
individual zooids arise, the pedicel being usually rather rigidly erect. 
In the GRAMPUS material there are hundreds of colonies all of them 
entirely removed from their support. I say “removed” because one 
ean scarcely conceive of a planula settling down to form a hydroid 
colony unless it had something on which to settle. As the stolons 
adhere quite closely to their means of support, they must have been 
Fig. 73.— Clytia cylindrica. 
orn away with some violence so that the stolons were broken in pieces 
is well. 
This separation and setting adrift produced complications, 
-0 the results of which reference must now be made. 
| With the first glance at a mass of this material one is immediately 
mpressed with the fact that there are very few free stolon ends. In 
olonies collected under ordinary conditions, we can usually see the 
rowing ends of the stolons. 
| 
t 
Here there seems to be nothing of the 
ind except in very rare instances. What has happened to them? 
\gain one would suppose that when the colonies were torn away there 
