PROTOMONADINA 253 



C. helicis L. (Fig. 117, i). In reproductive organs of various 

 species of Helix in America and Europe; 6-20)U long; asexual re- 

 production through binary fission. 



C. horreli (Laveran et Mesnil) (Fig. 117, j). In blood of various 

 freshwater fish such as Catostomus, Cyprinus, etc. ; 20-25m long. 



C. cyprini (Plehn) (Fig. 117, k). In blood of carp and goldfish; 

 lO-SOfx long; rare. 



C. grohbeni (Keysselitz). In coelenteric cavity of Siphonophora; 

 about 65ju by 4/x. 



Family 7 Amphimonadidae Kent 



Body naked or with a gelatinous envelope; 2 equally long an- 

 terior flagella; often colonial; 1-2 contractile vacuoles; free- 

 swimming or attached; mainly fresh water. 



Genus Amphimonas Dujardin. Small oval or rounded amoe- 

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

 elongated stalk-like posterior process; fresh or salt water. 



A. glohosa Kent (Fig. 118, a). Spherical; about 13yu in diameter; 

 stalk long, delicate; fresh water. 



Genus Spongomonas Stein. Individuals in granulated gelati- 

 nous masses; flagella with 2 basal granules; one contractile vacuole; 

 colony often several centimeters high; with pointed pseudopodia 

 in motile stage; fresh water. 



S. uvella S. (Fig. 118, h). Oval; 8-12yu 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. 118, c). Oval; about 8^ long; colony up to 

 85/i high. 



Genus Rhipidodendron Stein. Similar to Cladomonas, but 

 tubes are fused lengthwise; fresh water. 



R. splendidurn S. (Fig. 118, d, e). Oval; about 13yu long; flagella 

 about 2-3 times body length; fully grown colony 350^ high. 



Genus Spiromonas Perty. Elongate; without gelatinous cover- 

 ing ; spirally twisted ; 2 flagella anterior ; solitary ; fresh water. 



S. augusta (Dujardin) (Fig. 118, /). Spindle-form; about lOfx 

 long; stagnant water. 



Genus Diplomita Kent. With transparent lorica; body at- 

 tached to bottom of lorica by a retractile filamentous process; a 

 rudimentary stigma (?); fresh water. 



