SUBGROUPS AND GENERA OF THE THIOBACTERIALES 467 



Genus III. Thiosphaerion Miyoshi, 1897, p. 170 



Cells spherical-ellipsoidal, small {1.8 to 2.5ix violet in color, 

 with delicate sulphur inclusions. United by means of gelatin into 

 solid spherical families. Capable of swarming. 



The type species is Thiosphaerion violaceum Miyoshi. 



Genus IV. Thiocapsa Winogradsky, 1888, p. 84 



Cell families resembling in grouping and multiplication the cells 

 of the algal genus Aphanocapsa. Cell division occurs m all direc- 

 tions of space, the cells are spherical, with thick confluent membranes, 

 which unite to form a structureless, gelatinous layer. The cells are 

 of a bright rose red color and contain numerous sulphur granules. 

 The cells do not swarm. 



The type species is Thiocapsa roseo-persicina Winogradsky. 



Genus V. Thiosarcina Winogradsky, 1888, p. 104 



Synonyra : 



Rhodosarcina Jensen, 1909, p. 334 



Non-swarming cells arranged in packet shaped families, corre- 

 sponding to the genus Sarcina. Cells red, with sulphur granules. 

 The type species is Thiosarcina rosea (Schroeter) Winogradsky. 



Tribe II. Lamprocysteae Trib. nov. 



Synonyms : 



Lamprocystaceae Migula, 1900, p. 1043 



Cells united into families in which division of the cells occur 

 first in three planes, then in two. 



The single genus of this tribe is Lamprocystis. 



Genus I. Lamprocystis Schroeter, 1886, p. 151 



Synonyms: 



Clathrocystis Cohn, 1875 



not Clathrocystis Henfrey, 1856, p. 53 



Cohnia Winter, 1884, p. 48 

 not Cohnia Kunth 1850 

 not Cohnia Reichenbach 1852 



Cenomesiaf De Toni and Trevisan, 1889, p. 1039 



