558 



PROTOZOOLOGY 



R. hoplites R. (Fig. 266, d, e). 100-IOOOm long; in the intestine of 

 Lamprodrilus, Teleuscolex, Styloscolex, and other oHgochaetes. 



Genus Metaradiophrya Heidenreich. Ovoid to elhpsoid; with 2 

 lateral rows of contractile vacuoles; with a hook attached to a long 

 shaft; ectoplasmic fibers supporting the hook; in the intestine of 

 oligochaetes. Several species. 



Fig. 266. a, Maupasella nova, X280 (C^pede); b, Schiiltzellina mu- 

 cronata, X670 (C^pede); c, Metaradiophrya lumbrici, Xl40 (Cepede); 

 d, e, Radiophrya hoplites (d, Xl30; e, anterior end in profile, X300) 

 (Cheissin); f, Protoradiophrya fissispiculata, X330 (Cheissin); g, Mrazek- 

 iella intermedia, X210 (Cheissin); h, Mesnilella rostrata, X470 (Cheis- 

 sin); i, M. clavata, X290 (Penard). 



M. lumbrici (Dujardin) (Fig. 266, c). 120-140m by 60-70m; in the 

 intestine of Lumhricus terrestris, L. ruhellus and Eisenia foetida . 



M. asymmetrica Beers. 115-150m by55-70M; hook 10m long; shaft 

 25-30/x by 2/x in anterolateral margin in ectoplasm; 25-30 support- 

 ing fibrils; 2 rows of 4 vacuoles each, which do not contract regularly 

 in vitro ; in the intestine (middle third) of Eisenia lonnbergi. 



