PLATE 35.— Rotatoria. 



Figure 



1. Megalotrocha fiavicans. 



2. Megalotrocha JlavicanSj jaws, 



3. Melicerta ringens, 



4. Melicerta ringens, removed from its sheath, cr, rotatory lobes; 5, lips; c, 



accessory ciliated lobe ; d, tentacular processes ; e, pharynx or oesophagus 

 and jaws ; /, </, upper and lower stomach ; A, anus ; A', ovary ; /, oviduct ; 

 n, tail ; o, disk ; j), sarcodic globules ; q, ovum. 



5. Melicerta ringens, tentacular process of. a^ setae; h, conical body ; c, muscle, 



6. Melicerta. ringens, jaws of. 



7. Metopidia triptera. a, contractile sac. 



8. Microcodon clavus. 



9. Monocerca rattus. a, contractile sac ; h, muscle. 



10. Monolabis gracilis, 



1 1 . Monostyla quadridentata. 



12. Monura dulcis, 



13. Noteiis quadricornis . 



14. Notommata centrura. 



15. Notommata centrura, jaws of. 



16. CEcistes crgstallinus. 



1 7. Philodina erythrophthalma, 



18. Pleurotrocha gihba. 



19. Polyarthra platyptera. 



20. Pterodina patina. 



21. Ptygura melicerta, 



22. Rattidus limains. 



23. Rotifer vulgaris, a, contractile sac. 



24. Salpina redunca, dorsal view. 



25. Stephanoceros Eichornii, a, tremulous bodies. 



26. Synchceta baltica. 



27. Scaridimn longicaudum. 



28. Stephanops cirratus. 



29. Sqiiamella oblonga. 



30. Triarthra longiseta. 



31. Triophthalmus dorsualis. 



32. Theorus vernalis. 



33. Typhlina viridis. 



