DIATOMS FROM NEW BRUNSWICK. 
397 
Melosira Borerii Grev. 
Melosira varians Ag. 
Navicula directa. 
Navicula elegans. 
Navicula viridis Kg. 
Navicula ovalis W. S. 
Nitschia longissima Ralfs. 
Nitschia sigmoidea W. S. 
Nitschia closterium. 
Pleurosigma. 
Pyxidicula compressa. 
Rhabdonema minutum Kutz. 
Rhabdonema arcuatum. 
Svnedra radians W. S. 
Synedra ulna Ehr. 
Tabellaria flocculosa Kutz. 
Diatoms of the Northern Portion of Bay Chaleur. 
The conditions prevailing here are very different from those 
found in the other indentations of the northern coast. The geologi- 
cal formations bordering this part of the Bay Chaleur are not, as 
elsewhere, the sandstone of the Carboniferous system, but slates 
and volcanic rocks assigned to the Silurian and Devonian systems. 
The shores are much higher and bolder, and the waters of con- 
siderably greater depth than those of Bathurst and Chatham 
Harbors, and are also more free from suspended and dissolved 
matter, while the Restigouche River, which enters the Bay 
a few miles above Campbellton, unlike the Miramichi, is remark- 
able for the clearness and purity as well as for the coldness of 
its waters. The study of the distribution of Diatoms here 
should therefore present some facts of interest, but the lateness 
of the season at which observations were made, and the preval- 
ence of stormy weather, made the results less satisfactory than 
they otherwise would have been. 
Diatoms from Campbellton. 
Acnanthes subsessilis S. B. D. 
Actinoptychus undulatus S. B. D. 
Actinoptychus planus. 
Amphora ovalis Kutz. 
Cyclotella Meneghiniana Kg. 
Cyclotella compta Kg. 
Cocconema lanceolatum Ehr. 
Cocconeis scutellum Ehr. 
Cymbella gastroides Kg. 
Cymatopleura elliptica S. B. D. 
Coscinodiscus eccentricus Ehr. 
Coscinodiscus radiatus Ehr. 
Coscinodiscus minor Ehr. 
Campylodiscus cribrosus S. B. D. 
Climacosphenia elongata Bail (?) 
Cocconeis Placentula. 
Encyonema coespitosum Kg. 
Eunotia arcus. 
Eunotia tetraodon Ralfs. 
Fragillaria Harrisonii Grun. 
Epithemia zebra K. 
Grammatophora marina S. B. D. 
