Ward. — Some Thames Bacteria. 
299 
There are nine genera, as follows - 
Lamprocystis , which includes only Lankester’s Bacterium 
rubescens , with its numerous (real or assumed) synonyms. 
Ascococcus, again confined to one form — Cohn's A. Billrothii . 
Bollinger a, comprising two species of B. equi (. Micrococcus 
ascoformans of Johne, M. botryogenus of Rabe) and 
B. Vacchetae (Trev.). 
Cenomesia , also with two species — C. albida and C. lilacina , 
both from sulphur waters. 
Thiocystis , again comprising two forms — Winogradsky’s 
T. violacea and T. rufa , both from sulphur waters. 
Thiothece , including Winogradsky’s T.gelatinosa , from sulphur 
springs. 
Leucocystis , with only Schroeter’s L. cellaris , found in 
caverns, &c. 
All the above are regarded as having a general capsule, 
common to whole colonies or families : the following are 
devoid of this, but each coccus has its own special invest- 
ment : — 
Chlamydatomus includes the two species : C. Beigellii. , first 
described by Beigel as a Gregarina found on hair, and 
C. cellaris, found by Hansgirg in cellars. 
Gaffkya includes four species : G. grandis , the Microcoque des 
reins et des niches syphilitiques de la peau of Babes 
and Cornil. 
G. tetragena (Gaffky), Micrococcus tetragenus , found in 
phthisical sputum. 
G. Mendozae (Trev.), M. tetragenus mobilis ventriculi, a motile 
form which gives an odour of skatol in cultures. 
G. Archeri (Trev.), Archer’s Black Micrococcus , a deeply 
pigmented form found on potatoes. 
