CATALOGUE OF PLANTS. 455 
A. Ralfsii, W. Sm. 
Fresh water. Camden: Springs near Berlin. Atlantic: 
Absecon Pond. 
MERIDION, Ag. 
M. circulare, Ag. 
Fresh water. Common in ponds and springs. Burlington: 
Marlton. Salem: Woodstown and Sharptown. Camden: 
Blackwood and Kirkwood. Monmouth: Lake Como. Sus- 
sex: Andover. 
M. constrictum, Ralfs. 
Fresh water. Found in the same localities as the preceding 
species and associated with it. It is doubtful whether or not the 
two species are really distinct. Specimens are not infrequent 
that show gradations from one into the other. 
TABELLARIE. 
TABELLARIA, Hhrb. 
T. fenestrata, Kiitz. , 
Fresh water. Very common. Especially abundant in the 
ponds and streams of cedar-swamp regions. 
T. floceulosa (Roth.), Kiitz. 
Fresh water. Abundant in springs and brooks throughout 
the State. 
GRAMMATOPHORA, Ebrb. 
G. Islandica, Ehrb. . 
Marine. Monmouth: Common on L£efocarpus in Shark 
River. ; 
G, marina, Kiitz. 
Marine. Abundant on alge and on zoéphytes. Monmouth: 
Shark River, Manasquan River, Shrewsbury River. Atlantic: 
Atlantic City, Barnegat Bay. Cape May. 
G. serpentina, Ehrb. 
Marine. Monmouth: Occasional on alge in Manasquan 
River ; occasional in Ocean Beach clay. 
