428 OHIO BIOLOGICAL SURVEY 



PLATE XVIII 



1. Cryptoglena pigra Ehrenb., x 1000 (Lemmermann). 



2. Trachelomonas volvocina Ehrenb., x 1000 (Lemmermann). 



3. Trachelomonas perforata Awerinz., x 1000 (Awerinzew). 



4. Trachelomonas intermedia Dangeard, x 1000 (Dangeard) . 



5. Trachelomonas verrucosa Stokes, x 1000 (Palmer). 



6. Trachelomonas rugulosa Stein, x 1000 (Stein). 



7. Trachelomonas vermiculosa Palmer x 1000 (Palmer). 



8. Trachelomonas stokesiaua Palmer, x 1000 (Palmer). 

 P. Trachelomonas spiculifera Palmer, x 1000 (Palmer). 



10. Trachelomonas vestita Palmer, x 1000 (Palmer). 



11. Trachelornonas bernardi Wolos., x 1000 (Woloszynska). 



12. Trachelomonas teres Maskell, x 1000 (Maskell). 



13. Trachelomonas ohlonga Lemmermann, x 1000 (Lemmermann). 



PLATE XIX 



1. Trachelomonas crebea Kellicott, x 1000 (Palmer). 



2. Trachelomonas lemmermanii Wolosz., x 1000 (Woloszynska). 



3. Trachelomonas oralis v. Daday, x 1000 (v. Daday). 



4. Trachelomonas similis Stokes, x 1000 (Stokes). 



5. Trachelomonas volzii Lemmermann, x 1000 (Lemmermann). 



6. Trachelomonas e^iry stoma Stein, x 1000 (Stein). 



7. Trachelomonas incerta Lemmermann, x 1000 (Schulz). 



8. Trachelomonas africana Fritsch, x 1000 (Fritsch). 



9. Trachelomonas reticulata Klebs, x 1000 (Lemmermann). 



10. Trachelomonas euchlora (Ehrenb.), x 1000 (Stein). 



11. Trachelomonas conspersa Pascher, x 1000 (Pascher). 



12. Trachelomonas annulata v. Daday, x 250 (v. Daday). 



PLATE XX 



1. Trachelomonas minor Palmer, x 1000 (Palmer). 



2. Trachelomonas affinis Lemmermann, x 500 (Lemmermann). 



3. Trachelomonas volgensis Lemmermann, x 1000 (Zykoff). 



4. Trachelomonas acuminata (Schmarda), x 500 (v. Daday). 



5. Trachelomonas urceolata Stokes, x 500 (Stokes). 



6. Trachelomonas fluviatilis Lemmermann, x 1000 (Lemmermann). 



7. Trachelomonas schauinslandii Lemmermann, x 1000 (Lemmermann), 



8. Trachelomonas ensifera v. Daday, x 250 (v. Daday). 



9. Trachelomonas acanthostoma Stokes, x 500 (From description). 



10. Trachelomonas armata Ehrenberg, x 500 (Lemmermann). 



11. Trachelomonas raciborskH Wolosz., x 500 (Woloszynska). 



12. Trachelomonas globularis (Awerinz.), xlOOO (Awerinzew). 



13. Trachelomonas westii Wolosz., x 1000 (Woloszynska). 



14. Trachelornonas americana Lemmermann, x 1000 (Palmer). 



15. Trachelomonas aegyptiaca Lemmermann, x 500 (Schmarda). 



16. Trachelomonas piscatoris (Fisher), x 500 (Lemmermann). 



