300 
HULLKTIN OF THE NATURAL HISTORY SOCIETY. 
mentioned IstJuuia oicnis, found in the plankton of the 
Narrows; Triceratuun altcrnans, observed in Harris’s Cove; 
Rliabdoncma mimitum^ found in the Milkish and the Narrows, 
as well as in St. John Harbor; Cymatopleura and Coscinodisciis, 
of which specimens have been observed, but rarely, in collections 
from Harris's Cove, ^Millidgeville and Drury’s Cove. The forms 
of the latter genus^ as found inside the harbor, are all quite 
small. 
The following tables show more fully the facts of distriburton : 
