392 OHIO BIOLOGICAL SURVEY 



14. T. lemmermanaii Wolosz. (Fig. 2, PI. XIX) . 

 Elongately oval, narrowed posteriorly, truncate anteriorly, 



finely punctuate; flagellum about 2 times length of body. 

 L. 26^. D. 13/x. 

 Distribution, Java. Plankton (Sawa). 



15. T. ovalis Daday (Fig. 3, PI. XIX) . 



Oval, smooth, distinctly narrowed anteriorly where it is trun- 

 cate, broadly rounded posteriorly; flagellum 4/5 length of body; 

 flagellum opening 4/i in diameter and with fine marginal teeth. 



L. 32/^. D. 18/7. 



Distribution, East Africa. 



16. T. similis Stokes (Fig. 4, PI. XIX). 



Oval, broadly rounded at both ends, irregularly punctuate; 

 collar curved to one side and provided with irregular teeth. 

 L. 28/.. L. 14/x. 

 Distribution, North America. 



17. T. volzii Lemm. (Fig. 5, PI. XIX). 



Oval, thickly covered with granulations, collar cylindrical, 4u 

 high. 



L. 32/x. D. 15. 

 Distribution, Sumatra. 



18. T. eurystoma Stein (Fig. 6, PI. XIX). 



Oval, broadest anteriorly, rounded posteriorly, smooth ; collar 



low truncate, with indentations ; flagellum 2 times length of body. 



L. 30-31.5/x. D. 7. 



Distribution, Europe. Standing water. 



var. acuta Lemm. is pointed posteriorly with collar obliquely 

 truncate. 



19. T. incerta Lemm. (Fig. 7, PI. XIX). 



Oval, broadest anteriorly, gradually narrowed posteriorly ; 

 flagellum opening with annular thickening; flagellum 2-21/2 times 

 length of body. 



L. 37.6/^. D. 18/.(?). 



Distribution, Europe. Standing water. 



var. punctuata Lemm. is 15.5// in length and 7/j in diameter. 



Oval, smooth, slightly broadest toward anterior end, collar 

 comparatively high (5/x) and small; flagellum (?). 

 with a collar !/> in height. 



