88 
CLASS I.— ORDER II. 
CLYTIA. 
✓ 
Plant-like, branching, filiform, twining or climb- 
ing ; cells campanulated, and standing on long pe- 
dicles, generally curved. 
The Clytias form a very distinct group in our se- 
cond Order. The polypi, fixed in their campanulated 
cells, can seek their food at a little distance from their 
colony, by means of a long pedicle which supports 
their little habitation : this elastic pedicle enables 
them to move in a circle of which the radius extends 
from four to five millimetres, and at the same time 
gives a rotatory motion to the water, which serves to 
draw within its vortex the animalcula on which it 
feeds. 
The substance of the Clytias is cartilaginous ; their 
colour, a yellow fawn, seldom varying ; they are very 
small, sometimes hardly perceptible to the naked eye, 
and always parasites on the Thalassiophytes of the 
various seas on the face of the globe. 
VERTICILLATED. 
1. Clytia verticillata. Cells campanulated, toothed, 
upright, and supported on long peduncles, rather 
twisted, four to each verticil. 
Seas of Europe. 
CONVOLVULUS. 
2. Clytia volubilis . Cells campanulated, toothed, 
and dispersed ; peduncles very long, and very much 
twisted. 
In the Atlantic, and on the Thalassiophytes of the 
European seas. 
