THE EUGLENOIDINA OF OHIO 411 



thick posterior processes turned inwardly ; flagellum 2 times length 

 of body. 



L. 27-30/x. D. 21-23^. 



Distribution, Europe. Pools with much vegetation. 



6. P. steinii Klebs (Fig. 7, PI. XXIII). 



Oval, trianglar in cross section; carina prominent; flagellum 

 as long or longer than the body. 

 L. 38-42^. D. 22^. 

 Distribution, Europe. Pools with much vegetation. 



7. P. carinata France (Fig. 8, PI. XXIII). 



Elongately oval, with ends rounded ; carina broad, formed by 

 membraneous fold rolled toward the right; vacuole and nucleus 

 on median line. 



L. 23/x. D.(?). 



Distribution, Hungary (Balaton). 



8. P. abscissa (Duj.) (Fig. 9, PI. XXIII). 



Broadly oval or round, slightly narrowed anteriorly and often 

 truncate posteriorly ; ventral surface flat or with furrow ; dorsal 

 surface with 2 longitudinal carinae ; flagellum longer than body. 



L. 27.5^. D.(?). 



Distribution, Europe. Pools rich in aquatic vegetation. 



Var. convergens Klebs, is pointed anteriorly and emarginate 

 posteriorly with the longitudinal carinae converging anteriorly and 

 the L. 19/x, the D. 17//. 



Var. parallela Klebs is rounded anteriorly and emarginate 

 posteriorly with the longitudinal carinae parallel although often 

 unequal in size, L. 30/1, D. 17//. 



Var. deformis Klebs is pointed anteriorly, truncate posteriorly, 

 with 3 longitudinal parallel carinae. 



9. P. mira Awerinz. (Fig. 10, PI. XXIII). 



Oval with anterior end narrowed and curved toward the right, 

 the posterior end deeply emarginate; 3 longitudinal carinae; lateral 

 margins with a row of granules ; flagellum 2 times length of body. 



L. 26-30/x. D. 18/x. 



Distribution, Russia (Bologoje-Sea). In slime. 



