29S 
lUl.LKTlN OF THE NATURAL HISTORY SOCIETY. 
2 . Pond adjoining St. John Ricer jnst below Ifarding’s 
Point : 
Navicula rhynchocephala? Kutz. 
Pinnularia major Ktz. 
Epithemia turgida Ehr. 
Epithemia zebra Ehr. 
Synedra ulna Ehr. 
Synedra gracilis? 
Tabellaria flocculosa Kutz. 
Nitschia bilobata Sm. 
Nitschia sigma \\\ Sm. 
Nitschia linearis W. Sm. 
Surirella ovata Kutz. 
Cocconema lanceolatum Ehr. 
Diatoms from month of Nerepis River: 
The collections from which the following Diatoms were 
obtained were made in the vicinity of the Nerepis Bridge, and 
near where the waters of the Nerepis River mingle with those 
of the main St. John. In the channel of the latter, dtiring flood 
tide, a slight degree of salinity may be recognized, but it is 
doubtful whether this reaches the Nerepis proper or has any 
influence upon the character of its Diatom life. All the species 
enumerated are usually regarded as fresh water forms, though 
a few of them are also to be found in waters that are brackish. 
Stauroneis phenicenteron Ehr. 
Cocconeis Placentula Ehr. 
Pleurosigma attenuatum W. Sm. 
Melosira subflexilis Kutz. 
Melosira varians Ag. 
Bacillaria paradoxa Gmcl. 
Doryphora Boeckii \V. Sm. 
Eunotia monodon Ehr. 
Himantidium arcus W. Sm. 
Diatoma elongatum Ag. 
Fragillaria capucina? Desrn. 
Gomphonema constrictum. 
Tabellaria flocculosa Kutz. 
Epithemia turgida Ehr. 
Epithemia zebra Ehr. 
Himantidium undulatum W. Sm. 
Himafltidium gracile? Ehr. 
Melosira varians Ag. 
Melosira subflexilis Kutz. 
Bacillaria paradoxa Gmel. 
Nitschia bilobata W. Sm. 
Nitschia sigmoidea Ehr. 
Navicula maculata Bail. 
Navicula Smithii var. ovalis. 
Navicula. 
Navicula. 
Pinnularia acrosphenea? 
Pinnularia major Ktz. 
Pinnularia viridis Ktz. 
Synedra ulna Ehr. 
Stauroneis phenicenteron Ehr. 
Fragillaria capucina? 
Doryphora Boeckii \V. Sm. 
Cocconeis placentula Ehr. 
Cocconeis pediculus Ehr. 
Gomphonema geminatum Ag. 
Gomphonema acuminatum Ehr. 
Cocconema lanceolatum Ehr. 
Surirella splendida Ktz. 
Surirella Mollerianum Grun. 
Surirella. 
Diatoma vulgare Bory. 
Eunotia tetraodon Ehr. 
Eunotia monodon Ehr. 
Campylodiscus cribrosus \V. Sm. 
Cyclotella. 
Pleurosigma. 
Cymatopleura apiculata. 
