362 PROTOZOOLOGY 



Family 9 Bodonidae Biitschli 



With 2 flagella; one directed anteriorly and the other posteriorly 

 and trailing; flagella originate in anterior end which is drawn out 

 to a varying degree; one to several contractile vacuoles; asexual re- 

 production by binary fission; holozoic or saprozoic (parasitic). Mor- 

 phology and taxonomy (Hollande, 1942, 1952). 



Genus Bodo Ehrenberg (Prowazekia Hartman and Chagas). 

 Small, ovoid, but plastic; cytostome anterior; nucleus central or 

 anterior; flagella connected with 2 blepharoplasts in some species; 

 encystment common; in stagnant water and coprozoic. Numerous 

 species. Cytology (Belaf, 1920; Hollande, 1936). 



B. caudatus (Dujardin) (Fig. 152, a, b). Highly flattened, usually 

 tapering posteriorly; 11-22/x by 5-10>; anterior flagellum about 

 body length, trailing flagellum longer; blepharoplast; cysts spherical; 

 stagnant water. 



B. edax Klebs (Fig. 152, c). Pyriform with bluntly pointed ends; 

 11— 15/x by 5-7m; stagnant water. 



Genus Pleuromonas Perty. Naked, somewhat amoeboid; usually 

 attached with trailing flagellum; active cytoplasmic movement; 

 fresh water. 



P. jaculans P. (Fig. 152, d). Body 6-10> by about 5/z; flagellum 

 2-3 times body length; 4-8 young individuals are said to emerge 

 from a spherical cyst; stagnant water. 



Genus Rhynchomonas Klebs (Cruzella Faria, da Cunha and 

 Pinto). Similar to Bodo, but there is an anterior extension of body, 

 in which one of the flagella is embedded, while the other flagellum 

 trails; a single nucleus; minute forms; fresh or salt water; also some- 

 times coprozoic. 



R. nasuta (Stokes) (Fig. 152, e). Oval, flattened; 5 6/u by 2-3/x; 

 fresh water and coprozoic. 



R. marina (F., C. and P.). In salt water. 



Genus Proteromonas Kunstler (ProwazekeUa Alexeieff). Elon- 

 gated pyriform; 2 flagella from anterior end, one directed anteriorly 

 and the other, posteriorly; nucleus anterior; encysted stage is re- 

 markable in that it is capable of increasing in size to a marked de- 

 gree; exclusively parasitic; in gut of various species of lizards. Spe- 

 cies (Grasse, 1926, 1952). 



P. lacertae (Grassi) (Fig. 152, /). Elongate, pyriform; 10-30> long, 

 gut of lizards belonging to the genera Lacerta, Tarentola, etc. 



Genus Retortamonas Grassi {Embadomonas Mackinnon). Body 

 plastic, usually pyriform or fusiform, drawn out posteriorly; a large 



