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PROTOZOOLOGY 



Family 7 Amphimonadidae Kent 



Body naked or with a gelatinous envelope; 2 equally long anterior 

 flagella; often colonial; 1-2 contractile vacuoles; free-swimming or 

 attached ; mainly fresh water. 



Genus Amphimonas Dujardin. Small oval or rounded amoeboid; 

 flagella at anterior end; free-swimming or attached by an elongated 

 stalk-like posterior process; fresh or salt water. 



Fig. 149. a, a neutral red stained and b, a fixed and stained Cryptobia 

 helicis, X2200 (Kozloff); c, stained specimen of the same organism, 

 X1690 (Belaf); d, a living and e, stained C. borreli, X1730 (Mavor); f, 

 C. cyprini, X600 (Plehn). 



A. globosa Kent (Fig. 150, a). Spherical; about 13/x in diameter; 

 stalk long, delicate; fresh water. 



Genus Spongomonas Stein. Individuals in granulated gelatinous 

 masses; 2 flagella; one contractile vacuole; colonial; with pointed 

 pseudopodia in motile stage; fresh water. 



S. uvella S. (Fig. 150, 6). Oval; 8-12/x long; flagella 2-3 times as 

 long; colony about 50ju high; fresh water. 



Genus Cladomonas Stein. Individuals are embedded in dichot- 

 omous dendritic gelatinous tubes which are united laterally; fresh 

 water. 



C. fruticulosa S. (Fig. 150, c). Oval; about 8^ long; colony up to 

 85ju high. 



Genus Rhipidodendron Stein. Similar to Cladomonas, but tubes 

 are fused lengthwise ; fresh water. 



