THE EUGLENOIDINA OF OHIO 381 



6. P. suecica Lemm. (Fig. 1, PI. XVII). 



Broadly oval with posterior spike slightly acuminate ; peri- 

 plast with longitudinal striae which possess fine wart-like pro- 

 cesses ; flagellum about as long as body and arising from an ante- 

 rior elevation ; paramylon in the form of small round or oval 

 granules. 



Reproduction ( ?). 



L. 34^. D. 20-21/1;. 



Distribution, Europe. 



-7. P. longicauda (Ehrenb.), (Fig. 2, PL XVII). 



Oval with elongate straight posterior spike ; periplast longi- 

 tudinally striate ; flagellum less than length of body ; paramylon 

 in the form of 1 large discoid granule. 



Reproduction (?). 



L. 85-115/x. D. 46-70^. 



Distribution, cosmopolitan, in standing water and Plankton. 



Variety torta Lemm. is decidedly twisted. 



Found by Jennings in swamps on South Bass Island and East 

 Harbor, in Lake Erie and also by Landacre in Sandusky Bay (Bas- 

 ket Factory Cove). 



Gambler, 0. 



8. P. caudataHubner (Fig. 3, PI. XVII). 



Oval concave-convex with posterior spike short, straight, and 

 the dorsal fold reaching to the posterior end ; periplast longitudi- 

 nally striate ; flagellum as long as body ; paramylon in the form of 

 one large annular granule anterior to the nucleus and one smaller 

 granule near the posterior spike. 



Reproduction ( ?) . 



L. 45/x. D. 22.5/x. 



Distribution, Europe. Standing water. 



-9. P. acuminata Stokes (Fig. 4, PI. XVII). 



Broadly oval or circular with short posterior spike and a pro- 

 nounced dorsal fold nearly reaching the posterior end ; periplast 

 longitudinally striate ; flagellum about length of body ; paramylon, 

 2 small round granules. 



Reproduction ( ?). 



L. 25/x. D. 25/t-i. 



