25 



GOMPHONEMA Ag. 

 G. acuminatum Ehrb. 



Kings : Prospect Park, Brooklyn Water Supply. 

 G. capitatum Ehib. 



Kings : Prospect Park, Ridgewood. 

 G. constrictum Ehrb. 



Kings : Prospect Park. 



RHOICOSPHENIA Gmn. 

 R. curvata (Kiitz. ) Gmn. 



Ki?igs : Bay Ridge, Fort Hamilton. Queens: Arverne, Edwards. 



CYMBELLA Ag. 

 C. Cistula Hempr. 



Kings : Prospect Park, Coney Island, Woodman. 



ENCYONEMA Kiitz. 

 E. ventricosum Kiitz. 



Kings : Prospect Park, Brooklyn Water Supply. 



AMPHORA Elirb. 

 A. ovalis Kiitz. 



Frequent throughout the island. 



EPITHEMIA Bieb. 

 E. gibba(Ehrb.) Kiitz. 



Brooklya Water Supply. 

 E. Musculus Kiitz, 



Queens : Arverne, Edwards. 

 E. turgida (Ehrb ) Kiitz. 



Kings : Coney Island, Woodman. Queens : Arverne, Edwards. 



NITZSCHIA Hass. 

 N. acuminata W. Sm. 



Quee?ts : Arverne, Edwards. 

 N. fasciculata Grun. 



Kings : Bay Ridge. 

 N. gracilis Hantzsch. 



Kings : Prospect Park. 

 N. scalaris (Ehrb.) W. Sm. 



Kiitgs : Coney Island, Woodman. 

 N. Sigma W. Sm. 



Queens : Arverne, Edwards. 

 N. sigmoidea (Ehrb.) W. Sm. 



Kings : Prospect Park. 

 N. tryblionella H. 



Queens : Arverne, Edwards. 

 N. tabellaria Grun. 



Kings : Prospect Park. 



