416 GEOLOGICAL SURVEY OF NEW JERSEY. 
CLOSTERIUM, Nitsch. 
. juncidum, Ralfs. 
. macilentum, Breb. 
. gracile, Breb. 
didymotocum, Corda. 
aagaa 
decussatum, Kiitz. 
. Lunula, Ehyrb. 
. Cucumis, Ehrb. 
. acerosum (Schrank), Ehrb. 
. turgidum, Ebrb. 
. strigosum, Ehrb. 
. striolatum, Ehrb. 
. ecostatum, Corda, 
. lineatum, Ehrb. 
. decorum, Breb. 
. acutum, Breb. 
. Dianz, Ehrb. 
. Jenneri, Ralfs. 
. Venus, Kiitz. 
qaQaaqadgqagqagqgagagagqgagaaqagaa a 
. Ebrenbergii, Menegh. 
Var. immane, Wolle. 
C, moniliferum. Ehrb. 
C. Leibleinii, Kiitz. 
C. Ralfsii, Breb. 
Middlesex: Pond near Perth Amboy. 
C. rostratum, Ehrb. 
C. Kutzingii, Breb. 
C. cetaceum, Ehrb. 
All these species are distributed throughout the State in ponds, 
in greater or less abundance. 
DOCIDIUM, Breb. 
Including Pleurotenium, Neg. 
D. crenulatum (Ehrb.), Rab. 
D. clavatum (Kiitz.), De By. 
