CATALOGUE OF PLANTS. 443 



N. veneta, Kiitz. 



Marine. Atlantic : Abundant in pools near the inlet at At- 

 lantic City, and Monmouth : On the marshes near the mouth of 

 Manasquan River. 



N. ventricosa (Ehrb.), Donkin. 



Fresh water. Frequent in ponds. Salem : Woodstown and 

 Sharptown. Burlington : Marl ton and Pemberton. Mon- 

 mouth : Lake Como. 



N. viridis, Ktttz. 



Fresh water. Very common in ditches, ponds and pools 

 throughout the State. 



AMPHIPLBURA, Kutz. 



A. pellucida (Ehrb.), Kutz. 



Fresh water. Morris : Rare in Budd's Lake. 



PLBUROSIGMA, W. Smith. 

 P. uSJstuarii, W. Sm. 



Salt or brackish water ; common. Monmouth : Shark River 

 and Manasquan River. Cape May : Dennis Creek and Cape 

 May. 



P. angulatum, W. Sm. 



Salt or brackish water. Monmouth : Occasional in marsh 

 pools, Shark River, Manasquan River; fossil in Ocean Beach 

 clay. Atlantic : Absecon, Pleasantville, Atlantic City. 



P. Balticum, W. Sm. 



Salt or brackish water. Very common all along the coast. 

 Fossil in Ocean Beach clay. 



P. decorum, W. Sm. 



Salt or brackish water. Monmouth: Common in sand rip- 

 ples near the mouth of Shark River. 



P. delicatulum, W. Sm. 



Brackish water. Camden : Rare in the Delaware River 

 Lewis. 



