Marine Bacteria 



Occurrence 

 in the sea 



+ 



+ 

 + 

 + 



+ 



+ 



+ + 



+ 

 + 

 + 



+ 

 + 



Through the courtesy of the Board of Editors of Sergey's Manual of Determinative Bacteriology, this Out- 

 line Classification follows that used in the new (Sixth) Edition of this book now in press (see Breed et al., 1944, 

 1945)- 



The symbol A indicates that representatives of the genus have been found 

 as adventitious organisms in the sea, i.e., in polluted water only or under 

 other circumstances which strongly suggest that they are not indigenous 

 species. 



It has been necessary to rely largely upon personal judgment in 

 recording the frequency of occurrence of bacterial genera in the sea. The 

 descriptions of many marine bacteria are so fragmentary that it is diffi- 

 cult or impossible to ascertain the genus to which they belong. Early 

 workers in the field indiscriminantly applied the generic name Bacillus or 

 Bacterium to most rod-shaped organisms, many of which properly should 

 be classified as Fsetidomonas, Flavobacterium, Proteus, AcJiromobacter, 

 Serratia, etc., in light of more recent developments in taxonomic bacteri- 

 ology. This is true of the numerous species of Photobacterium and Hali- 

 bacterium described by Fischer (1894a) and the Agarbacteriiim species 

 described by Angst (1929), although certain species of these obsolete 

 genera actually are Bacterium or Bacillus as defined by Bergey et al. 

 (1946). 



