430 OHIO BIOLOGICAL SURVEY 



11. Petalotnonas qnadrilineata Penard, x 1000 (Penard). 



12. Petalomonas sulcata Stokes, x 1000 (From description). 



13. Petalomonas alata Stokes, x 1000 (From description). 



14. Scytomonas pusilla Stein, x 1000 (Lemmermann). 



15. Scytomovas dobelli n. sp., x 1000 (Lemmermann). 



PLATE XXIV 



1. Scytomonas major (Berliner), x 1000 (Berliner). 



2. Peranema trichophorum (Ehrenb.), x 1000 (Lemmermann). 



3. Peranema gramdifera Penard, x 1000 (Penard). 



4. Urceolus cyclostomus (Stein), x 1000 (Lemmermann). 



5. Urceolus costatus Lemmermann, x 1000 (Stein). 



6. Urceolus alenizini Mereschk., x 1000 (Mereschkonsky). 



7. Urceolus sabulosus Stokes, x 1000 (Stokes). 



8. Heteronemu acus (Ehrenb.), x 1000 (Lemmermann). 



9. Heteronema acutissimum Lemmermann, x 1000 (Stokes). 

 10. Heteronema tremuhim Zacharias, x 1000 (Zacharias). 



IL Heteronema spirale Klebs, x 1000 (Lemmermann). 



PLATE XXV 



1. Heteronema mutahile (Stokes), x 250 (Stokes). 



2. Heteronema klebsii Senn, x 1000 (Senn). 



3. Heteronema nebulosum (Dujard.), x 1000 (Lemmermann). 



4. Heteronema globiferum (Stein), x 1000 (Klebs). 



5. Tropidoscyphus cyclostomus Senn, x 1000 (Senn). 



6. Tropidoscyphus octocostatus Stein, x 1000 (Lemmermann). 



7. Notosolenus aposamptus Stokes, x 1000 (Stokes). 



8. Notosolenus orbicularis Stokes x 1000 (Stokes). 



9. Notosolenus sivuatus Stokes, x 1000 (Lemmermann). 



10. Anisonema ovale Klebs, x 1000 (Lemmermann). 



11. Anisonema emarginatum Stokes, x 1000 (Stokes). 



12. Anisonema acinus Dujard., x 1000 (Lemmermann). 



13. Anisonema truncatum Stein, x 1000 (Stein). 



14. Anisonema pusillum Stokes, x 1000 (Stokes). 



PLATE XXVI 



1. Ploeotia vitrea Dujard., x 1000 (Seligo). 



2. Ploeotia marina n. sp., x 1000 (Calkins). 



3. Metanema variabile Klebs, x 1000 (Klebs). 



4. Metanema striatum Klebs, x 1000 (Lemmermann). 



5. Marsupioguster striata Schewiak, x 1000 (Schewiakoff). 



6. Entosiphon sulcatum (Dujard.), x 1000 (Lemmermann). 



7. Entosiphon ovatum Stokes, x 1000 (Stokes). 



8. Entosiphon obliqunm Klebs, x 1000 (Klebs). 



9. Clautriavia mobilis Mass, x 1000 (Schouteden). 



10. Clautriavia parva Schout, x 1000 (Schouteden). 



11. Dinema griseolum Perty, x 1000 (Lemmermann). 



