23 



Volvo x 

 Noctiluca 



Trypanosoma ... 

 Spirochcetes 

 Paramecium . . . 

 Opalina. 



Vorticella 

 Acineta 



Monocystis ... 

 Coccidium 



Plasmodium 



(syn. Hcemamoeba) 



Piroplasma 

 (syn. Babesia) 



A colonial Flagellate. The colony 

 spheres are commonly found 

 rolling about in the water in 

 ponds. 



A marine Flagellate. It often 

 occurs in great numbers on the 

 surface of the sea in coastal 

 waters and contributes to the 

 phenomenon of phosphores- 

 cence. 



One of the Hsemoflagellates which 

 are important blood parasites 

 in Man and the lower animals. 



Parasitic flagellate forms which 

 are important blood parasites 

 in Man and the lower animals. 



A common Ciliate Infusorian. In 

 stagnant ditches and pools 

 among decaying organic matter. 



A parasitic Ciliate. An internal 

 parasite in the rectum of the 

 frog. 



A stalked Ciliate found attached 

 to water-weeds, etc., in ponds. 



A marine and sedentary Infus- 

 orian of the Class Acinetaria. 

 It is found on Hydroids. 



One of the Sporozoa. A Gregar- 

 ine parasite found in the re- 

 productive organs of the Earth- 

 worm. 



One of the Sporozoa. Coccidium 

 oviforme is an internal parasite 

 in the liver of the rabbit. 



rOne of the Sporozoa belonging to 



\the group Hsemosporidia. An 

 important blood parasite in Man. 

 {One of the Haemosporidia. An 

 important blood parasite in 

 cattle, horses, etc. 



