232 GENERAL SYSTEMATIC BACTERIOLOGY 



of the subfamily Bactridei which possess diffuse flagella and in which 

 the cells containing endospores retain their cylindrical shape. Later 

 (1897, p. 32) the diagnosis read: "Motile, peritrichous, in some spores 

 as yet unknown. Very numerous representatives, e.g., B. subiilis, 

 B. megatherium, B. vulgaris (old genus Proteus) B. typhi and B. coli." 

 The second edition of the Vorlesungen (p. 60) does not materially change 

 the diagnosis. 



Chudiakov (1896) named an anaerobe Bactridium butyricum. 



Erwin F. Smith (1905, p. 158) states that the generic name Bactridium 

 has been used several times in botany as well as in zoology. 



A Bactridium lipolyticum was named by Huss (1908, p. 474). It is 

 evident that upon grounds of priority Fischers use of Bactridium is not 

 tenable. 



(For reason for not considering Bactridium as a homonym of Bac- 

 teridium see the latter.) 



Bactrillei. A name used b}^ Fischer (1895, p. 139) for a subfamily of 

 the Bacillaceae. It was defined to contain motile rod-shaped bacteria 

 with lophotrichous flagella. The subfamily contains the genera Bac- 

 trillum, Plectrillum, Clostrillum and Arthrohactr ilium. 



The name is not in correct botanical form. 



Bactrillius. A genus name proposed by Kendall (1902, p. 484) to 

 include rod-shaped bacteria motile by means of a single polar flagellum. 

 The name has never been used, and has not been applied to a spec es. 

 It is evident!}^ invalid, (i.e., a hyponym). 



Bactrillum. A genus name proposed hy Fischer (1895, p. 139) to 

 include those rod-shaped forms belonging to the subfamily Bactrillei 

 which are motile by means of a tuft of polar flagella and which produce 

 spores without causing any enlargement of the mother cell. This genus 

 was redefined in 1897 (p. 32) as follows : "Motile rods with lophotrichous 

 ciliation. Includes provisionally Bact. cyanogenus." In the second 

 edition of his Vorlesungen, page 60, it is noted that the spores of many 

 species are not known. Of forms belonging to this genus, the organisms 

 commonly known as Bact. syncyaneum and Bact. fluorescens are noted. 

 This genus is practically synonomous with Pseudomonas Migula. It 

 has never come into general use, and is commonly regarded as invalid. 

 It is rejected by Erwin F. Smith (1905). 



Probably Bactrillum pseudo-termo Fischer is to be regarded as the 

 type. 



Bactriniei. A subfamily of the family Bacillaceae created by Fischer 

 (1895, p. 141) to include all rod-shaped organisms motile by means of a 



