PLATE X. 



1. Rotifer tardus 



la 



16. 

 If. 



1,/ 



Ir 



1/. ., 



2. Rotifer vulgaris 



26. „ 



3. Rotifer hapticus 



4. Rotifer macrui-us 

 4fl. „ „ . 

 46, 4c. „ 



5. Rotifer megaceros 

 5a. „ ., . 



r>b. „ .. . 



(). Ac'tiiuirus Neiitniiiiis 

 Cm. 



7. Calliilina bihaiiiata 



7(7. 



76. 

 7c. 



8. Calliilina bidcns 

 8a. .. .. . 



86 



9. Calliilina parasitica 

 9a. 



96. 

 9c. 

 Od. 



10. Ailuieta vajja 

 10a. 



106 



10c 



dorsal view ; corona expanded 

 dorsal view ; corona contracted 



side view 



head ; side view ; corona expaniliug 

 niastax and alimentary canal (under pr 

 column with the eye spots broken up 

 spurs and toes .... 

 dorsal view ; corona expanded 

 dorsal view ; corona contracted 

 spurs and toes .... 

 side view ..... 

 dorsal view ; corona contracted 

 obliquely dorsal view ; corona expandei 

 spm's and toes .... 



dorsal view 



side view ..... 

 dorsal antenna .... 

 side view, extended 

 dorsal view, contracted ... 

 dorsal view ..... 

 side view ..... 

 column and hooks, dorsal view 

 column and liooks, ventral view . 

 dorsal view ; corona expanded 

 dorsal view ; corona contracted 

 dorsal ^^ew, retracted . 

 dorsal view ; corona contracted 

 dor.sal view, retracted . 

 head, dorsal view ; corona expanded 



trophi 



penultimate joint and spurs . 

 ^•cntral view ..... 

 head, side view (after ;\[r. H. Davis) 

 o\-arv, lateral canals, and vibratile tags 

 trophi ...... 



essure) 



G 



G 



G 



G 



G 



G 



G 



G 



G 



G 



G 



G 



G 



G 



G 



G 



G 



G 



G 



G 



G 



G 



G 



G 



G 



G 



G 



G 



G 



G 



G 



H 



H 

 H 



