446 GEOLOGICAL SURVEY OF NEW JERSEY. 



COLLETONEMA, Breb. 

 C. eximium, Thwaites. 



Fresh or brackish water. Salem : Ditches near Salem. 



C. vulgare, Thwaites. 



Fresh water. Monmouth : Lake Como. 



BERKLEYA, Qrev. 

 B. fragilis, Grev. 



Marine. Monmouth : Abundant on eel-grass in Shark River, 

 and Atlantic : In the bays near Atlantic City. 



GOMPHONEM.E. 



GOMPHONEMA, Ag. 

 G. acuminatum, Ehrb. 



Fresh water. Common on water plants in ponds and ditches. 

 Gloucester : Mullica Hill. Salem : Sharptown. Burlington : 

 Marlton and Pemberton. Morris : Lake Hopatcong. Sussex : 

 Andover, Hamburg, Culver's Gap and Musconetcong River. 



Var. laticeps, V. H. 



Fresh water. Camden : Common in Kirkwood Pond. 

 G. affine, Kutz. 



Fresh water. Burlington : Common in pond near Marlton. 



G. angustatum (Kutz.), Grun. 



Fresh water. Salem : Common in ponds at Sharptown and 

 Woodstown. 



G. Augur, Ehrb. 



Fresh water. Common in ponds. Salem : Sharptown. 

 Camden : Kirkwood. Sussex : Hamburg and Andover. 



G. capitatum, Ehr. 



Fresh water. Camden : Common in Kirkwood Pond. 



G. constrictum, Ehrb. 



Fresh water. Common in ponds .and ditches. Gloucester : 

 Mullica Hill. Salem : Woodstown, Sharptown. Morris : Lake 



