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 : 

 Marl ton. Salem : Woodstown and Sharptown. Camden : 

 Black wood and Kirkwood. Mon mouth : Lake Como. Sus- 

 sex : Andover. 



M. constrictum, Kalfs. 



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. 



TABELLAEIE^E. 



TABBLLARIA, Bhrb. 



T. fenestrata, Kiitz. 



Fresh water. Very common. Especially abundant in the 

 ponds and streams of cedar- swamp regions. 



T. flocculosa (Roth.), Kiitz. 



Fresh water. Abundant in springs and brooks throughout 

 the State. 



GRAMMA.TOPHORA, Bhrb. 

 G. Islandica, Ehrb. 



Marine. Mon mouth : Common on Edooarpus in Shark 

 River. 



G, marina, Kiitz. 



Marine. Abundant on algae and on zoophytes. Monmouth : 

 Shark River, Manasquan River, Shrewsbury River. Atlantic : 

 Atlantic City, Barnegat Bay. Cape May. 



G. serpentina, Ehrb. 



Marine. Monmouth : Occasional on algae in Manasquan 

 River; occasional in Ocean Beach clay. 



