l.Floscular ia 



2.Sref)hanoceros -S.Melicerra 



4. M e I ic e r r a 



7. H y d a r i n a 



5. Phi lodina 



6. A s jDla nchna 



8. Polyar t-hra 



9. N or e us 



10.1X1 orhoica 



Fia. 249. Typical forms of Rot if era. 9 and 10 show the lorica only, ((/(.'.amis; c^.'A ciliary 

 circlets ; int. intestine ; m. muscle ; ph. pharynx. (After Hudson and Gosse.) 



VOL. I 



X 



