CATALOGUE OF PLANTS. 435 
S. anceps, Ehrb. 
Fresh water. Common in meadow ditches. Salem: Woods- 
town, Sharptown, Salem. Burlington: Marlton. Camden: 
Camden, Kirkwood. Sussex: Culver’s Gap, Andover. Morris: 
Lake Hopatcong, Budd’s Lake. Cape May: Ditches near Cape 
May Point. 
Var. amphicephala, Kiitz. 
Fresh water. Monmouth: Common in Lake Como. 
S. aspera (Ehrb.), Kiitz. 
Marine. Monmouth: Common in Manasquan River, Shark 
River and Barnegat Bay ; fossil in clay at Ocean Beach. 
§S. gracilis, Ehrb. 
Fresh water. Common in ponds and meadow ditches. Cam- 
den: Camden, Blackwood. Burlington: Marlton, Pemberton. 
Salem: Woodstown, Sharptown. Gloucester: Mullica Hill. 
Sussex: Andover, White Hall, Hamburg. Morris: Fossil at 
Drakesville. 
S. Phosnicenteron, Ehrb. 
Fresh water. Common in ponds and meadow ditches through- 
out the State. Fossil at Drakesville. 
8. salina, W. Sm. 
Marine. Monmouth: Common in Shark River, Manasquan 
River, and in marsh pools near Absecon. 
NAVICULA, Bory. 
N. acrosphheeria, Breb. ; 
Fresh water. Burlington: Frequent in old marl-pits near 
Marlton. 
N. affinis, Ebrb. 
Fresh water. Monmouth: Common in meadow ditches near 
Long Branch, and Salem: Woodstown. 
N. Americana, Ehrb. 
Fresh water. Morris: Fossil at Drakesville. 
N. amphigomphus, Ehrb. (N. iridis, var.) 
Fresh water. Common in ponds and ditches. Burlington: 
Marlton, Ewansville, Pemberton. Atlantic: Absecon. Mon- 
mouth: Ocean Beach clay. 
