THE EUGLENOIDINA OF OHIO 365 



Reproduction by copulation of gametes. Encystment with 

 division in spherical state, the gelatinous envelope thick. 



L. 55-120/^. D. 28-33^. 



Distribution, cosmopolitan. 



An interesting species which at times colors pools and small 

 ponds an intense red on the surface. In the var. furcata Hiibner 

 the cell is narrowed anteriorly so that a neck-like appearance re- 

 sults, while a spiral furrow reaches from the cytopharynx to the 

 middle of the body. 



Ohio, Cedar Point; Sandusky, in quarry ponds. 



11. E. rubra Hardy (Fig. PI. XII) . 



Cylindrical, red, with broadly rounded anterior end and poste- 

 rior end suddenly narrowed into a distinct tip which is rounded 

 posteriorly; periplast spirally striate; flagellum approximately as 

 long as body; chloroleucites( ?) ; pyrenoids( ?) ; nucleus slightly 

 posterior; paramylon short cylindrical. 



Reproduction by encystment with formation of distinct mem- 

 brane. 



L. 150(?)-200^. D. 50(?)-60/u 



Distribution, cosmopolitan. Australia ; Europe, Bohemia. 



The species was described by Hardy, 1911, in association with 

 E. viridis in small pools at Donocaster, Australia, and more re- 

 cently it has been noted from Bohemia. It appears quite distinct 

 from E. sanguinea. 



12. E. haematodes (Ehrenb), (Fig. 12, PI. XII). 



Fusiform, red, metabolic; periplast smooth; flagellum 11/2-2 

 times length of body; stigma absent (?) ; chloroleucites in the form 

 of rods and ribbons (notched disks ?) ; pyrenoids ( ?) ; paramylon 

 round or oval ; protoplast colored red by haematochrome. 



Reproduction by longitudinal division. Encystment with a 

 thick membrane and subsequent division. 



L. 75-103/.. D. 28-36/y. 



Distribution, cosmopolitan ( ?) . 



-13. E. velata Klebs (Fig. 13, PL XII). 



Elongately oval with short tip, rounded anteriorly, metabolic ; 

 periplast weakly striate spirally; flagellum as long or somewhat 

 shorter than the body; nucleus large, median; stigma large, granu- 



