440 GEOLOGICAL SURVEY OF NEW JERSEY. 
N. nobilis (Ehrb.), Kiitz. 
Fresh water. Generally distributed throughout the State. 
Fossil at Drakesville. 
N. oblonga, Kiitz. 
Fresh water. Common in ponds and ditches. Salem: 
Woodstown, Sharptown. Atlantic: Hammontou. Gloucester: 
Mullica Hill. Sussex: Hamburg, Andover. Morris: Lake 
Hopatcong, Budd’s Lake ; fossil at Drakesville. 
N. oculata, Breb. 
Marine. Monmouth: Abundant between tide marks at the 
mouth of Shark River and of Manasquan River. 
N. palpebralis, Breb. 
Marine. Monmouth: Common between tide marks:in Mana- 
squan River and Shark River. Cape May: Dennis Creek. 
N. parva (Ehrb.), V. H. 
Fresh water. Frequent in ponds and ditches. Camden: 
Ancora. Gloucester: Mullica Hill. Burlington: Marlton. 
Cape May. 
N. peregrina (Ehrb.), Kiitz. 
Fresh or salt water; common. Monmouth: Fresh-water 
ditches near Ocean Beach ; salt marshes near the mouth of Mana- 
squan River; fossil in Ocean Beach clay. Atlantic: Water 
from artesian well at Atlantic City. 
N. permagna, Bailey. 
Brackish or salt water; common. Monmouth: Ditches near 
the mouth of Shark River; marshes near the mouth of Mana- 
squan River; fossil in Ocean Beach clay. Cape May: Salt 
marshes near Cape May. 
N. polyonca, Breb. 
Fresh water. Camden: Occasional in Kirkwood Pond— 
Kain; mud from Cooper’s Creek at Camden—Lewis. 
N. Powellii, Lewis. 
Fresh water. Gloucester: Rare in old marl-pits at Mullica 
Hill. 
N. preztexta, Ehrb. 
Marine. Monmouth: Common in the mud of ditches near 
the mouth of Manasquan River ; fossil in Ocean Beach clay. 
