THE EUGLENOIDINA OF OHIO 391 



distal end and with a flagellum collar having a height of between 

 1/3 and 1/2 the diameter of the shell; collar broadest at top; 

 flagellum (?). 

 L. 25,ji. 



Distribution, North America. Ponds with Eunotia pectinalis 

 (Kutz.). 



10. T. bernardi Wolosz. (Fig. 11, PI. XVIII). 

 Transversely oval, truncate anteriorly ; flagellum opening with 

 annular thickening; flagellum 4 times length of body. 

 L. 10-15/x. D. 15-18/x. 

 Distribution, Java. Plankton (Sawa). 



*11. T. teres Maskell (Fig. 12, PI. XVIII). 



Oval, smooth; flagellum opening extremely wide; collar low; 

 flagellum about as long as body. 



L. 35/. . D. 15/4?). 



Distribution, New Zealand. A form 29/x long which must be 

 referred to this species was obtained in water from one of the 

 upper storage reservoirs at the Cincinnati water works. 



•=12. T. oblonga Lemm. (Fig. 13, PI. XVIII). 



Oval, smooth; flagellum opening with annular thickening 

 which is at times developed into a low collar. 



L. 13-16/.. D. 11-12/x. 



Distribution, Europe and North America. Standing water. 



Mirror Lake, 0. S. U., Columbus, 0. 



Var. truncata Lemm. is truncate anteriorly, comparatively 

 shorter than oblonga with dimensions L. 12-13/i, D. 11/x. Var. 

 punctuata Lemm. is elongately oval and thickly covered with line 

 punctuations. 



-13. T. crebea Kellicott (Fig. 1, PI. XIX). 



Oval, thickly covered with granulations; collar widened at 

 mouth, normally straight, and minutely notched; flagellum (?) 



L. 25/i. D. ( ?) . 



Distribution, North America. 



Found by Kellicott in Ohio and by Palmer in the Delaware, 

 although it is here noted that the prevalent form has a collar 

 curved to one side. This is the form which Lemmermann has 

 considered as var. dentata by reason of the teeth on the collar. 



