380 GENERAL SYSTEMATIC BACTERIOLOGY 



34 of the International Code of Zoological Nomenclature, we herewith propose 

 the generic name Micros'pironema as substitute, with Microspironema pallidum 

 (Schaudinn, 1905) Stiles and Pfender, 1905, as type species. 



This was proposed later, however, than Treponema of Schaudinn 

 (1905, p. 1728) and is hence invalid. It has not been used by sub- 

 sequent writers. It may be regarded as a synonym of Treponema. 



Microspora. A name listed by Erwin F. Smith (1905) in his genera 

 to be rejected. The original reference for this has not been found. 

 Perhaps it is a variant spelling of Microsporon (q.v.). 



Enlows (1920, p. 60) ascribes the term to Beijerinck and states 

 "Variant of Microspira Schroter M. tyrosinatica.^' 



Microsporon. A generic name first used by Klebs (1871, p. 33) 

 for the bacterial species M. septicum. This is regarded as a very poly- 

 morphic organism which was responsible for suppuration in wounds, 

 etc. His descriptions of the organism are misleading for he did not 

 have pure cultures. His theory of pleomorphism was soon discarded 

 and the generic name generally regarded as nomen nudum. It has 

 not been used by subsequent authors in the original sense. M. septi- 

 cum is given as a synonym of Streptococcus pyogenes by De Toni and 

 Trevisan (1889, p. 1062). This genus is generally accepted (sometimes 

 with spelling Microsporum) for a genus of molds parasitic upon man. 



Conn (1909, p. 12) describes Microsporon (apparently as a vaHd 

 genus) as "Bacilli with one flagellum at each end." This is evidently 

 a misstatement. 



Microsporon may be regarded as invalid as a bacterial generic name. 



Microzoa. Listed by Erwin F. Smith (1905) as a non-vahd generic 

 designation for bacteria. 



Microzyma. A generic name used by Bechamp (1868, p. 1160) 

 for the parasite of the silk worm, Microzyma homhycis. Schroeter 

 (1889, p. 150) gives an earlier reference to Bechamp (1867, p. 42) but 

 an examination of this fails to show the use of the word Microzyma. 

 Trevisan (1879, p. 142) also credits the name Microzyma du lait to 

 Bechamp. This name has never been used as a generic designation 

 by other authors. 



The Microzyma bombycis is made a synonym of Streptococcus hom- 

 hycis by Schroeter (1886, p. 150). The name is rejected by Erwin F. 

 Smith (1905). Enlows (1920, p. 60) lists two species, Microzyma 

 cretae and M. homhycis as described by Bechamp (1867, p. 231). 



Microzyme. A name used by various earlier authors as equivalent 

 to bacteria (see Burdon-Sanderson 1871, p. 323). A casual name. 



