EUCILIATA, HOLOTRICHA 

 J 



697 



Fig. 298. a, Maupasella nova, X280 (Cepede); b, Schultzellina mucro- 

 nata, X670 (Cepede); c, Hoplitophrya criodrili, X500 (Miyashsita) ; d, e, 

 Radiophrya hoplites (Cheissin) (d, X 130; e, anterior end in profile, X300) ; 

 f, Metradiophrya lumbrici, X140 (Cepede); g, Protoradiophrya fissispicu- 

 lata, X330 (Cheissin); h, Mrazekiella intermedia, X210 (Cheissin); i, 

 Mesnilella rostrata, X470 (Cheissin); j, M. clavata, X290 (Penard). 



plasmic fibrils; macro nucleus a narrow long band; a single row of 

 many small contractile vacuoles, close to the nucleus. Many species. 



R. hoplites R. (Fig. 298, d, e). 100-1000ju long; in the intestine of 

 Lamprodrilus, Teleuscolex, Styloscolex, and other oligochaetes. 



Genus Metaradiophrya Heidenreich. Ovoid to ellipsoid; 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. 



M. lumbrici (Dujardin) (Fig. 298,/). 120-140m by 60-70m; in the 

 intestine of Lumbricus terrestris, L. rubellus and Eisenia foetida. 

 Morphology (Williams, 1942); argyrome (Puytorac, 1951). 



