458 GEOLOGICAL SURVEY OF NEW JERSEY. 
S. bifrons, Ehrb. 
Fresh water. Frequent in ponds and meadow ditches. Cam- 
den: Camden, Blackwood and Kirkwood. Salem: Woodstown 
and Sharptown. Gloucester: Mullica Hill. Atlantic: Ham- 
monton and Absecon. Morris: Fossil at Drakesville, and 
Monmouth: In clay at Ocean Beach. 
S. biseriata, Breb. 
Fresh water. Camden: Common in ponds at Kirkwood, and 
Gloucester: Mullica Hill. 
S. cardinalis, Kitton. 
Fresh water. Gloucester: Common in ponds at Mullica Hill. 
Atlantic: Absecon. Camden: Occasional in the water-supply 
of Camden. 
S. elegans, Ehrb. 
Fresh water. Occasional in ponds and meadow ditches. 
Camden: Camden and Blackwood. Atlantic: Absecon. Glou- 
cester: Mullica Hill. Salem: Woodstown and Sharptown. 
Morris: Fossil at Drakesville. Monmouth: In clay at Ocean 
Beach. 
S. fastuosa, Ehrb. 
Marine. Common all along the coast—Lewis. 
x 
8S. Febigerii, Lewis. 
Brackish water. Monmouth: Common in the mud of brack- 
ish ditches near the mouth of Manasquan River, and of Shark 
River. Cape May: Marshes near Cape May—Lewis. 
S. Gemma, Ebrb. 
Salt or brackish water. Monmouth: Marshes near the mouth 
of Manasquan River. Atlantic: Marshes near Absecon. 
S. limosa, Bailey. 
Camden: Delaware River mud—Lewis. 
S. linearis, W. Sm. 
Fresh water. Camden: Common in cranberry bogs near 
Atco. 
S. minuta, Breb. 
' Fresh water. Common in ponds. Salem: Sharptown and 
Woodstown. Gloucester: Mullica Hill. Sussex: Andover 
and White Hall. 
