PROTOMONADINA 363 



cytostome toward anterior end; nucleus anterior; 2 flagella; cysts 

 pyriform or ovoid; parasitic in the intestines of various animals. 

 Taxonomy (Wenrich, 1932; Kirby and Honigberg, 1950). 



R. gryllotalpae G. (Fig. 152, g). About 7-14;u (average 10/x) long; 

 in intestine of the mole cricket, Gryllotalpa gryllotalpa. 



Fig. 152. a, b, Bodo caudatus, X1500 (Sinton); c, B. edax, X1400 

 (Kiihn); d, Pleuromonas jaculans, X650 (Lemmermann); e, Rhin- 

 chomonas nasuta, X1800 (Parisi); f, Proteromonas lacertae, X2500 

 (Ktihn); g, Retortamonas gryllotalpae, X2000 (Wenrich); h, R. blattae, 

 X2000 (Wenrich); i, R. intestinalis, X2000 (Wenrich); j, Phijllomitus 

 undulans, X1000 (Stein); k, Colponema loxodes, X650 (Stein); 1, Cerco- 

 monas longicauda, X2000 (Wenyon); m, C. crassicauda, X2000 (Dobell). 



R. blattae (Bishop) (Fig. 152, h). About 6-9/x long; in colon of 

 cockroaches. 



R. intestinalis (Wenyon and O'Connor) (Figs. 152, i; 153). Poly- 

 morphic, often pyriform or ovoid with drawn-out posterior end; 4-9ju 

 by 3-4ju; cytostome large, about 1/3 the body length ; vesicular nucleus 



