8 CANADIAN FOSSILS. 
Fig. 2. 
GRAPTOLITHUS BRYONOIDES. 
In some species of this mode of growth, the bases of the stipes are 
united in a more or less expanded dise or cup of the same substance as the 
body of the graptolite. The form of this dise is shown on plates v, vi, 
Vii, vill, and ix, and also in the accompanying figure of Graptolithus Headi. 
Fig, 4. Fig. 3. 
GRAPTOLITHUS. OCTOBRACHIATUS, 
In a farther development in the same direction, we have fronds with 
eight simple stipes, which may or may not be united in a central disc, as 
in the accompanying figure. 
