4388 GEOLOGICAL SURVEY OF NEW JERSEY. 
N. follis, Ehrb. 
Fresh water. Atlantic: Frequent in ponds at Hammonton 
and Absecon. 
N. forcipata, Grev. 
Marine. Frequent on the sands between tide marks and in 
salt-water ditches. Monmouth: Shark River, Manasquan 
River, Ocean Beach clay. Atlantic: Atlantic City. 
N. fortis, Greg. 
Marine. Atlantic: Common in meadow pools near the inlet. 
at Atlantic City. 
N. gibba (Kiitz.), Ehrb. 
Fresh water. Common in ponds and streams. Monmouth: 
Ocean Beach, Lake Como. Sussex: Culver’s Gap, Branchville. 
Atlantic: Absecon. 
N. gracilis (Ehrb.), Kiitz. 
Fresh water. Sussex: Occasional in a pond near Hamburg. 
' 
N. granulata, Breb. 
Marine. Monmouth: Occasional on sand flats at the mouth 
of Shark River and of Manasquan River; Ocean Beach clay. 
Atlantic: Atlantic City. 
N. Hennedyi, W. Sm. ; 
Marine. Monmouth: Occasional in Shark River and Mana- 
squan River; fossil in Ocean Beach clay. Camden: Fossil in 
the blue clay of the Delaware River at Camden—Lewis. 
N. Hitchcockii, Ehrb. 
Fresh water. Camden: Rare, in Kirkwood Pond. 
N. humerosa, Breb. 
Marine. Monmouth: Common between tide marks in Shark 
River and Manasquan River ; fossil in Ocean Beach clay ; also 
at Long Beach, on alge—Lewis. 
N. Indica, Grev. 
Marine. Monmouth: Occasional in ditches near the mouth 
of Manasquan River ; fossil in Ocean Beach. clay. 
N. inflexa, Greg. 
Marine. Monmouth: Abundant in sand ripples at the mouth 
of Shark River. 
