DIATOMEAE. 629 



TROPIDONEIS Cleve. 

 Tropidoneis lepidoptera (Greg.) Cleve. Not common. 



EPITHEMIA Breb. 

 Epithemia Musculus Kiitz. Bare. 



NITZSCHIA Hassall. 



Nitzschia apiculata (Greg.) Grun. Common. 

 Nitzschia Sigma (Kiitz.) W. Smith. Bare? 

 Nitzschia valida Cleve & Grun. Bare. 



SURIRELLA Turpin. 



Surirella fastudsa Ehrenb. Bare. 

 Surirella recedens A. Schmidt. Bare. 



PODOCYSTIS Kiitz. 

 Podocystis adriatica Kiitz. Local. 



CAMPYLODISCUS Ehrenb. 



Campylodiscus simulans Greg. Bare. 

 Campylodiscus imperialis Grev. 



The following list contains additional names of species occurring in the 

 harbor mud of Nassau, as reported by Tempere (Diatomees du Monde entier, 

 144, 375. 1915). To avoid inconsistency, the nomenclature, in some instances, 

 is revised to agree with the classification of Cleve, Van Heurck, Deby, Grunow 

 and others. Nearly all of the forms are more or less common along the Atlan- 

 tic coast. 



Meloseira arenaria Moore. 



Meloseira sulcata Kiitz. 



Coscinodiscus concinnus Jonesianus (Grev.) Battray. 



Coscinodiscus excentricus Ehrenb. 



Coscinodiscus leptopus Grun. 



Coscinodiscus marginatus Ehrenb. 



Coscinodiscus nitidulus Grun. 



Coscinodiscus nitidus Greg. 



Coscinodiscus nodulifef Janisch. 



Coscinodiscus obscurus A. Schmidt. 



Coscinodiscus radiatus Ehrenb. 



Coscinodiscus Rothii Grun. 



Actinoptychus splendens (Shadb.) Balfs". 



Actinoptychus undulatus (Bailey) Balfs. 



Actinoptychus vulgaris Schumann. 



Actinocyclus fasciculatus Castr. 



Actinocyclus moniliformis Balfs. 



Actinocyclus Eotula Brun, var. 



Euodia Gibba Bailey. 



Boperia tessellata (Boper) Grun. 



Auliscus caelatus Bailey. 



Auliscus reticulatus Grev. 



Biddulphia Antillarum (Cleve) Boyer. 



Biddulphia arctica (Brightw.) Boyer. 



