394 
BULLETIN OF THE NATURAL HISTORY SOCIETY. 
Odontidium mesodon K. 
Orthosira marina W. Sm. 
Pleurosigma acuminatum W. S. 
Synedra ulna Ehr. 
Synedra salina W. S. 
Tabellaria fenestrata Kutz. 
Surirella ovata Kutz. 
Surirella circumsuta Bail. 
Surirella Febigerii Lewis. 
3. Red Bank, sixteen miles above Newcastle: 
This prosperous village is situated on the right bank of the 
Northwest Miramichi, about two miles below the confluence 
of its two principal branches, the Northwest and Little South- 
west. The water is subject to slight change of level, due to 
the backing action of the tides below, but contains to the taste 
no trace of salt. Not far below the confluence referred to mud 
from the bottom yielded the following forms, all of which are 
fresh-water types, though some of them are also found in brackish 
waters. 
Surirella splendida Kutz. 
Navicula viridis Ktz. 
Epithemia turgida Ehr. 
Meridion circulare Ag. 
Cocconema lanceolatum Ehr. 
Cymbella cuspidata Kutz. 
Licmophora. 
Synedra ulna Ehr. 
Fragillaria. 
Tabellaria flocculosa Kutz. 
Himantidium gracile Ehr. 
Gomphonema constrictum Ehr. 
Melosira punctata (?) 
Diatoms from Southern Portion of Chaleur Bay. 
With a view to a comparison of the Diatoms of Bathurst, 
Chatham and the lower part of the Miramichi River, contained 
in the preceding lists, gatherings were next made along the 
south shore of the Bay of Chaleur where the conditions are 
more purely marine. The larger part of the coast is fronted 
by high bluffs of Carboniferous sandstones and shales. The 
accompanying waters, however, are not deep, and about the 
long piers which have been constructed for wharfing purposes 
considerable areas occur in which there is an abundant growth 
of eel grass, and from these as well as from the wharves many 
collections were made. The species found in these are contained 
in the following lists: 
