GENERAL SYSTEMATIC BACTERIOLOGY 527 



media. Frequently liquefy gelatin. Not enlarged near center. No spores. 

 Usually Gram-negative. 



The type species is Vibrio cholerae. 



Castellani and Chalmers (1919, p. 962) state: 



5piV<7Zaceae motile, with short comma-like cells, possessing one, rarely more, 

 flagellum at one, rarely at both ends. 



Type. It is difficult to decide which is the type of this genus so defined. 



Remarks. The important species is the Vibrio comma Koch, 1884, which is the 

 cause of Asiatic cholera, but there are many others which cause paracholera. 



Berge}' et al. (1923, p. 77) followed CasteUani and Chalmers. 



It is apparent that the modern use of the term Vibrio is not con- 

 sistent with the conception of Vibrio lineola as the type. Apparently 

 either the genus should be dropped as having a type species that cannot 

 be identified, or there should be an agreement that Vibrio cholerae, 

 a somewhat arbitrary' choice, shall be selected as the type. The latter 

 alternative is the one here adopted. 



Vibrion. A casual name for bacteria apparenth^ first used by Pas- 

 tern* (1876) in the phrase "vibrion septique." Not a generic name. 



Vibrionia. A family of protozoa used by Ehrenberg (1838) to in- 

 clude the genera Bacterium, Spirillum, Vibrio, Spirochaeta and Spiro- 

 discus. 



Perty (1952, p. 179) used this as the single famil}- of his Sectio Lam- 

 prozoidia. It contained two subfamilies Spirillina and Bacterina. 



It has also been used in a sense equivalent to "bacteria" (Quart. 

 Journ. Mic. Sci., 1855, p. 205). 



Vibrionides. The sixth family of the first order Gymnodes of Bory 

 de St. Vincent's (1826, p. 533) group ^Vlicroscopique. 



The order Gymnodes is described as without tests, perfectly smooth, 

 without cilia or other vibratile organs. The family is characterized 

 as without appendages, hnear or wormlike. Five genera are included, 

 Spiriliyia, Mela?iella, Vibrio, Lacrimatoria and Pupella. 



Vibrionieae. A tribe of bacteria created by Trevisan (1879, p. 

 137) with the following description: 



Bacteriaceae pluricellulares. Individua e cellulis pluribus in somatia saepe 

 filiformia dispositis conflata. Sporae intra somatium matricale uniseriales. 

 Multiplicatio divisione somatiorum vegetativa semper ad eandem directionem 

 longitudinalem. 



It was divided into the subtribes Euvibrionieae, Myconostoceae and 

 Cladothriceae. 



