102 
PROTOZOA. 
The last class is that of the Sporozoa, the members of 
which are endoparasitic. 
They are found in nearly all the higher animals. 
Gregarina is a type of the class. 
Mono. 
cystis is found in the seminal vesicles of the earthworm 
and has a simpler body than Gregarina. 
The young are 
intra-cellular parasites within the sperm-cells. 
The Coccidia are small Sporozoa of simple structure 
which occur commonly in the liver of the rabbit and 
elsewhere. 
They may give rise to tumours and serious 
pathological results. 
SUB-KINGDOM PROTOZOA, 
1 Unicellular or when multicellular the units are not mutually dependent. 
z No true sexual reproduction, asexual by binary or multiple fission, preceded 
by conjugation. 
3. Mostly minute, marine or freshwater. 
Puytum I.—Gymnomyxa. 
Naked protoplasm with no 
definite shape to body. 
Class I.—Ru1zopopa. 
Type—Ameba. 
1. Locomotion by pseudo- 
Ppodia. 
z. No localised mouth, 
diffuse ingestion. 
3. Many have achambered, 
calcareous, siliceous, or 
arenaceous shell. 
4. Reproduction mainly by 
binary fission. 
5. Floating or creeping, 
marine or freshwater. 
Puytum II,—Corrticata. 
A cortex with definite 
shape to body. 
Class II.—Civiata. 
Types— Paramecium ; 
Vorticella. 
Locomotion by cilia or 
flagella. 
Localised mouth. 
No shell. 
Reproduction usually by 
binary fission. 
Active, moving or seden- 
tary, freshwater or 
miarine, 
Class III.—Sporozoa. 
Type—Gregarina. 
Little or no locomotion. 
Hooks for fixation. 
No mouth nor solid in- 
gestion. 
No shell. 
ee re by multiple 
fission with coated 
spores. 
Endoparasitic. 
