Figure 206. Ingestion of plant material by Ophryoscolecidae. A, a piece of grass with 

 three fiber bundles, which are beset with Diplodinium gracile: B, long cellulose fiber 

 rolled up in D, gracile; C, large fragment of grass in Elytroplastron bubalidis ; D, a piece 

 of grass with two D. gracile and four Opisthotrichum janus. The former have ingested 

 the ends of fibers, the latter ingests fine detritus from the surface; E, E. bubalidis, which 

 has partly ingested a large piece of grass. (After Dogiel, 1925.) 



