Figure 202. Skeletal structures and attachment organelles in Astomata. A, B, Meiara- 

 diophrya asyfnmetrica from the oligochaete Eisenia lonnbergi ; C, Radiophrya tubificis 

 from Tubifex tubifex; D, Mrazekiella costata (anterior end) from Rhynacodrilus coccin- 

 eus ; E, Buchiieriella criodriU from Griodrilus lacuum (the sphere around the projecting 

 spine is normally formed in the tissue cell to which the ciliate attaches) ; F, Maupasella 

 nova from Eisenia joetida and species of Lumbricus ; G, Mesnilella fasti gat a from Enchy- 

 traeus mobii ; H, Mesnilella maritui from oligochaetes ; I, Intoschellina poljanskyi from 

 Limnodrilus arenarius ; J, Radiophrya lumbriculi from Styloscolex sp. and Lamprodrilus 

 sp., attachment apparatus; K, Etim monodontophrya kijenskiji from Tubifex inflatus. 

 (A, B, after Beers, 1938a; C, after Rossolimo and Perzewa, 1929; D, E, F, after Heiden- 

 reich, 1935; G, after Cepede, 1910; H-K, after Cheissin, 1930.) 



