414 GEOLOGICAL SURVEY OF NEW JERSEY. 



BAMBUSINA, Kiitz. 

 B. Brebissonii, Kiitz. 



In quiet waters ; frequent. 

 B. delicatissima, Wolle. 



Burlington : Pleasant Mills. 



DBSMIDIUM, Ag. 

 D. cylindricum, Grev. 



In ponds ; frequent. 

 D. quadrature, Nordst. 



Burlington : Brown's Mills. 

 D. longatum, Wolle. 



Same locality. 



D. Swartzii, Ag. 



In shallow pools ; frequent. 

 D. aptogonium, Breb. 



Similar places ; frequent. 

 D. Baileyi (Ralfs), Wolle. (Aptogonium Baileyi, Ralfs.) 



Ocean, and Burlington : Pleasant Mills, in sluggish waters. 



PHYMATODOCIS, Nordst. 



P. Nordstedtianum, Wolle. 



Burlington : Pond at Brown's Mills. 



SPH^IROZOSMA, Corda. 

 S. pulchrum, Bail. 



Frequent in ponds. 

 Far. planura, Wolle. 



Middlesex : Near Metuchen. 

 Far. innatum, Wolle. 



Sparingly in ponds. 

 S. flliforme, Rab. 



Frequent in ponds. 

 S. pulchellum (Arch.), Rab. 



Same habitat. 



