GENERAL SYSTEMATIC BACTERIOLOGY 359 



Perhaps the Committee is right in not regarding the Proteus-bacteria (my 

 genus Liquidomonas) as a separate genus, as their whole metabolism indicates 

 that they are to be looked upon as gelatin-liquefying Coli- and Aerogenesbacteria. 



Probably this genus is to be regarded as a synonym of Pseudomonas, 



Liquidovibrio. A generic name proposed by Orla-Jensen (1909, 

 p. 334). It is included in his family Luminibacteriaceae of the order 

 Cephalotrichinae. 



The generic characters are : Cells bent or spiral, usually not requiring 

 an organic source of nitrogen, aerobic, often photogenic. The type 

 species given is Liquidovibrio comma. 



This name is probably to be regarded as invalid, and a synonym of 

 Vibrio or of Microspira. 



Lophotricha. A group name proposed by Messea (1891) to include 

 bacteria with a cluster of flagella at one pole. 



Luminibacteriaceae. A family name proposed by Orla-Jensen 

 (1909, p. 333) to include the photogenic and fluorescent bacteria which 

 do not contain sulphur or bacterio-purpurin, cells never in thread- 

 like filaments and with no tendency to branching. The genera in- 

 cluded are: Denitromonas, Liquidomonas, Liquidococcus, Solidococcus, 

 and Liquidovibrio. 



Macintoshillus. A name given by Heller (1922, p. 13) to the third 

 genus of her tribe Clostridioideae with the following description: 



Clostridioideae that do not liquefy gelatin. They produce acid and gas and no 

 putrefaction in meat media. They do not readily attack milk and they ferment 

 few or no sugars. Gram-negative rods with parallel sides and with terminal 

 spherical spores. Colonies in deep agar are small and irregular but not woolly. 

 Frequently found in wounds. Apparently incapable of invading tissue. 



Type species tetanomorphus (pseudotetanus bacillus, Mcintosh (p. 32), Bacil- 

 lus telanumorphus Committee (p. 41)), as described by the Committee. Glucose 

 and maltose are fermented. 



Macrococcus. A name occasionally used to contrast with micro- 

 coccus. It apparently has not been used as a generic name. It has 

 the same meaning as megacoccus which is the preferable form. It 

 has been used principally with the spelling "Makrokokkus" (q.v.). 

 It is listed among the rejected names by Erwin F. Smith (1905). 



Makrokokkus. A name used by Miller (1892, p. 73) in his discus- 

 sion of cocci. He states: "Dieselben zeigen sehr verschiedene Dimen- 

 sionen, von sehr kleinen runden Kokken bis zu auffallend grossen Kok- 

 ken "Makrokokken." It is an aberrant spelling of Macrococcus 

 (q.v.). A better form is Megacoccus. It is not a generic name. 



