THE EUGLENOIDINA OF OHIO 



375 



TABLE OF SPECIES. 



Ai Pellicula striate. 



B' Posterior end suddenly constricted to form a more 

 or less pronounced tooth. 

 C^ Periplast with striae spiral. 

 D^ Anterior end rounded. 

 D- Anterior end produced into a neck-like 

 process. ...... 



C- Periplast with striae not distinctly spiral. 

 B- Posterior end either gradually narrowed or broadly 

 rounded. 



Ci Posterior end gradually narrowed. 

 D' Anterior end broadly rounded. 



El Form oval, posterior third not de- 

 cidedly narrowed. 

 E- Form spindle shaped, posterior third 

 decidedly narrowed. 

 D- Anterior end gradually narrowed. 



El In the form of a short and broad 

 spindle. ..... 



E- In the form of a long and narrow 



spindle 



C- Posterior end broadly rounded. 

 A- Pellicula smooth. 



B' Anterior end not mouth-like in appearance. 

 B- Anterior end mouth-like in appearance. 



1. L. ovum 



2. L. sphagnophila 



3. L. steinii 



4. L. buetschlii 



5. L. teres 



6. L. f usiformis 



7. L. acicularis 



8. L. texta 



9. L. globosa 

 10. L. marssonii 



*1. L. ovum (Ehrenb), (Fig. 6, PI. XV). 



Oval, posterior end with distinct spike 6-1 ii in length ; periplast 

 decidedly striate spirally; flagellum twice length of body. 

 Reproduction ( ?) . 

 L. 30-38/x. D. 15-18/x. 

 Distribution, cosmopolitan. Standing water and Plankton. 



Lemmermann recognizes four varieties: var. glohida (Perty), 

 spherical, L. 20-27/x, D. 16-21//, with flagellum 2-3 times length of 

 body; var. striata (Hubner), approaching cylindrical, L. 37-38/*, 

 D. 25/x, with many annular paramylon granules; var. punctuato- 

 striata Lemm., L. 27-28/1, D. 20-21/x, oval with punctuate striae; 

 var. palatina Lemm., L. 20/x., D. 20-21//., with striae composed of 

 elongate markings. The spike is usually shorter in the varieties. 



Ohio, Landacre, Sandusky (Biemiller's Cove) ; Magnetic 

 Springs (Baker's Creek) ; Coll. Osborn. 



