IZ 



13 



14 



FIG. I26A. Diagram of the structure of a Rotifer (Hydatina}. 

 After Plate. 



1. Attaching foot. 



2. Cement glands. 



3. Bladder into which renal tubes open. It communicates with the exterior 



via the cloaca (14). 

 4, 5. Ova lying in the oviduct. 



6. A longitudinal muscle. 



7. Gastric gland. 



8. Gizzard or mastax, with masticating apparatus. 



9. Ciliated lobes at the anterior end. A ciliated funnel leads down to the 



mouth. 



10. Gullet. 



11. A muscle. 



T2. Large cells forming the wall of the stomach. 



13. A renal tube, also seen anteriorly. 



14. The cloaca. 



