I 
DIATOMS OF NEW BRUNSWICK. 403 
Melosira nummuloides Kutz. 
Melosira Borerii Grev. 
Melosira varians Ag. 
Nitschia closterium W. Sm. 
Nitschia vermicularis. 
Nitschia sigmoidea. 
Pleurosigma Balticum W. S. 
Pleurosigma acuminatum (?) 
Navicula didyma Kutz. 
Cocconeis scutellum Ehr. 
Doryphora Boeckii W. Sm. 
Synedra. 
Pinnularia viridis Kutz. 
Tryblionella. 
Surirella. 
Diatoms from the Vicinity of Shediac. 
The coasts at Shediac and in the vicinity present the same 
features as those found elsewhere on the north shore, tfie waters 
being very shallow for considerable distances from the shore 
line and the bottom composed mainly of fine sand, from which 
Diatoms can be obtained only in small numbers and with diffi- 
culty. Probably richer gatherings could be made from the 
extremity of the steam-boat wharf at Point du Chene, but, 
owing to stormy weather, these were impossible at the time of 
my visit. Somewhat better results were obtained at the Mouth 
of Shediac River, a few miles north of Shediac itself, the following 
species having been obtained from the piers of the bridge at 
this point. 
Amphiprora alata Kutz. 
Grammatophora marina Lyn. 
Pleurosigma Balticum W, S. 
Navicula elegans W. S. 
Navicula viridis Kutz. 
Navicula Smithii var. ovalis Ag. 
Navicula maculata Bail. 
Campylodiscus spiralis W. Sm. 
Synedra ulna Ehr. 
Homoecladia sigmoidea W. S. 
Surirella. 
Amphora ovalis Kutz. 
Nitschia sigmoidea Ehr. 
Nitschia Tryblionella H. 
Nitschia vermicularis Hantz. 
Rhabdonema arcuatum Lyn. 
Rhabdonema. 
Odontidium mutabile S. B. D. 
Biddulphia aurita Lyn. 
Acnanthes longipes Ag. 
Cocconeis scutellum Ehr. 
SUMMARY. 
From a review and comparison of the foregoing lists some 
interesting conclusions may be drawn. 
The first feature of the collections to attract attention is 
the general similarity of the forms met with at the several points 
