628 DIATOMEAE. 



SYNEDEA Ehrenb. 



Synedra Gaillonii minor Kiitz. Local. 

 Synedra superlba minor Kiitz. Bare. 

 Synedra undulata Bailey. Bare. 



OOCCONEIS Ehrenb. 

 Cocconels Scutellum Ehrenb. Common. 



AMPHORA Ehrenb. 



Amphora obtusa Greg. Occasional. 

 Amphora bigibba Grun. Bare. 



MASTOGLOIA Thw. 



Mastogloia angulata Lewis. Common. 



Mastogloia apiculata W. Smith. Common. 



Mastogloia asperula Grun. Not common. 



Mastogloia bahamensis Cleve. Not common. 



Mastogloia binotata (Grun.) Cleve. Rare. 



Mastogloia Citrus Cleve. Common. 



Mastogloia cocconeiformis (Grun.) Cleve. Common. 



Mastogloia cuspidata Cleve. Common. 



Mastogloia delicatula Cleve. Not common. 



Mastogloia erythraea Grun. Common and variable. 



Mastogloia lanceolata Thw. Common. 



Mastogloia lemniscata Leud. Bare. 



Mastogloia minuta Grev. Common. 



Mastogloia rimosa Cleve. Bare or local. 



Mastogloia Smithii Thw. Common. 



Mastogloia splendida (Greg.) Cleve. Common and variable. 



DIOTYONEIS Cleve. 

 Dictyoneis jamaicSnsis Cleve. Bare. 



DIPLONEIS Ehrenb., em. Cleve. 



Diploneis vaclllans (A. Schmidt) Cleve. Bare. 

 Diploneis Weissflogii (A. Schmidt) Cleve. Bare. 



NAVICUIiA Bory. 



Navicula brasilifinsis Grun. Bare. 

 Navicula Lyra dilatata A. Schmidt. Bare. 

 Navicula ramosissima (Ag.) Cleve. Local. 

 Navicula suborbicuia,ris (Greg.) Donkin. Bare. 

 Navicula Zostereti Grun. Bare. 



TRACHYNEIS Cleve. 

 Trachyneis aspera (Ehrenb.) Cleve. Bare. 



PINNITLAEIA Ehrenb. 

 Finnularla rectangul§,ta Greg. Bare. 



PLEUBOSIGMA W. Smith. 

 Pleurosigma formosum W. Smith. Bare. 



