CATALOGUE OF PLANTS. 449 
Morris county. Although this is usually considered to be 
strictly a fresh-water species, yet it is very plentiful in a 
decidedly brackish pool near Manasquan River. 
C. placentula, Ehrb. 
Fresh water. Generally distributed throughout the State. 
C. scutellum, Ehrb. 
Salt and brackish water. Abundant all along the coast. 
Parasitic upon alge and zodphytes. 
Tribe 2.-PSEUDO-RAPHIDIEZ. 
FRAGILARIEZ. 
BPITHEMIA, Breb. 
EH, gibba (Ehrb.), Kiitz. 
Fresh water. Common in ponds and ditches. Gloucester : 
Mullica Hill. Salem: Woodstown. Burlington: Marlton. 
Sussex: White Hall and Andover. Morris: Lake Hopatcong 
and Drakesville fossil deposit. 
HE. Musculus, Kiitz. 
Brackish water. Common in brackish ditches and pools all 
along the coast. 
H. succincta, Breb. 
Fresh water. Burlington: Occasional in meadow ditches 
near Marlton. 
EH. turgida (Ehrb.), Kiitz. 
Fresh water. Very common in meadow ditches and pools. 
Fossil at Drakesville, Morris county. 
E. ventricosa, Kiitz. (Variety of E. gibba.) 
Fresh water. Frequent in meadew ditches and pools. Salem: 
Woodstown. Burlington: Marlton. Sussex: Andover and 
Hamburg. Morris: Lake Hopatcong. 
2D 
