THE AMERICAN MIDLAND NATURALIST. 



The following species of diatoms, normally part of the 

 plankton of adjoining regions may under varying conditions 

 be found in Cold Spring Harbor, according to Bigelow* and 

 Fish.** 



BIDDULPHIOIDEAE. 



Barter iast rum delicatulum (Cleve) — C. J. Fish. 

 Bacteriastrum sp. — H. B. Bigelow. 

 Bellerochea malleus (Brightw.) — C. J. Fish. 

 Biddulphia alterants (Bailey) v. H. — C. J. Fish. 

 Biddulphia favus (Ehrb.) v. H. — C. J. Fish. 

 Biddulphia granulata (Roper) — C. J. Fish. 

 Biddulphia biddulphiana (Smith) — C. J. Fish. 

 Biddulphia rhombus (Ehrb.) — C. J. Fish. 

 Biddulphia vesiculosa (Agard.) — C. J. Fish. 

 Chaetoceros atlanticum (Cleve) — C. J. Fish. 

 CJiaetoceros boreale (Schiitt.) — C. J. Fish. 

 Chaetoceros cinrtum (Gran) — C. J. Fish. 

 CJiaetoceros coarctatum (Lauder) — C. J. Fish. 

 Chaetoceros contortum (Schiitt.) — C. J. Fish. 

 Chaetoceros eriophilum (Castr.) — C. J. Fish. 

 Chaetoceros danicum (Cleve) — C. J. Fish. 

 Chaetoceros debile (Cleve) — C. J. Fish. 



* 1912. Bigelow, H. B. Exploration of the coastal water of the 

 N. E. United States in 1916 by the U. S. Fisheries Schooner Gram- 

 pus. Bull Mus. Com. Zoology at Harvard College. Vol. LXV., No. 5. 



**Fish„ C. J. Seasonal Distribution of the Plankton of the Woods 

 Hole Region. U. S. Bureau of Fisheries. Document No. 975. 



The results of a Biological Survey of the Waters of Long Island 

 Sound by Dr. P. S. Galtsoff are in preparation and will be published, 

 by the U. S. Bureau of Fisheries. This publication will probably add 

 to the forms to be expected in the vicinity of Cold Spring Harbor. 



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