ISd'O) ISytcles of liotifera and Protozoa. 317 



EXPLANATION OF PLATES. 



Plate XXTL 



Fig;. 1. Brachioniis variabilis n. sp. 

 Fig. 2. " variahilis n. sp. Form without pos 



terior spines. 



Plate XXIIL 



Fig. 3. Brachionus punctatus u. sp. Lateral view. 

 Fig. 4. " punctatus n. sp. Dorsal view. 



Fig. 5. " punctatus n. sp. Anterior aud pos- 



terior ends of lorica. 

 Fig. 6. Brachionus hudapestinensis Dada3\ 



Plate XXIV. 



Fig. 7. Brachionus mollis n. sp. Dorsal view. 

 Fig. 8. " mollis n. sp. Lateral view. 



Pl.\te XXV. 



Fig. 9. Difflugia tuberculosa n. sp. 



Fig. 10. " tuhercdosa n. sp. Another form. 



Fig. 11. Ceratium hrevicorne n. s]). Ventral view. 



Fig. 12. " hrevicorne n. sp. Dorsal view. 



Plate XXVL 



Ceratium hrevicorne n. sp. Lateral view. 

 Tintinnopsis illinoisensis n. sp. 



" illinoisensis n. sp. Another form. 



" illinoisensis n. sp. Another form, 



not so much magnified, 

 Opercula/ria irritahUis n. sp. Expanded zoiiid. 



" irritabilis n. sp. Contracted zooid. 



