128 Marshall Ward. — -On the Characters , or 
* Cocci very numerous and grouped in large 
families. 
t Cysts homogeneous, not lamellated. 
Lamprocysiis. Families solid, and then hollow, 
and eventually irregularly clathrate. Cocci 
dividing at first in three, and then in two planes. 
Ascococcus. Families solid at all ages. Cocci 
dividing in one plane. 
1 1 Cysts lamellated. 
Bollinger a. Families solid in all stages. Cocci 
dividing in three planes. 
* * Cocci not very numerous. Families small, 
t Cysts pluri-lamellose. 
Leucocystis. Cocci dividing in three planes, 
t t Cysts homogeneous, not lamellated. 
Cenomesia. Cysts very large and dense. Cocci 
grouped at the periphery, in families which 
eventually become hollow. Divisions at first in 
all planes, then two only. 
Thiothece. Cysts rather large and dense, persistent. 
Cocci sparse and remote. Divisions in one plane. 
Thiocystis. Cysts large, subdeliquescent. Cocci 
in small crowded families. Divisions in three 
planes. 
(ii) Cocci surrounded by special cysts : no universal 
cysts. (G-afFkyeae). 
Chlamydatomus. Cysts firm, persistent, numerous, 
in dense groups, solid throughout. 
Gaffkyea. Cysts tenuous, eventually diffluent, 
solitary, never in dense groups. 
(/3) Cocci joined loosely into filamentous series in the 
mucous matrix. Universal cysts tenuous, and soon 
deliquescing. No special cysts. (Amoefoacterieae). 
Amoebobacter . Cocci dividing in one plane. 
B. Sarcineae. 
Cocci in strata, one or more deep, and surrounded by more or 
less evident mucous matrix. No cysts. Endospores smaller 
than the mother-cells — cocci — which produce them. 
