THE EUGLENOIDINA OF OHIO 371 



The var, klebsii Lemm. is 78-80/t long, 7-8/x in diameter and 

 has rod-like paramylon granules much shorter. 



*30. E. tripteris (Dujard.), (Fig. 7, PI. XIV). 



Elongately band-like in form, spirally twisted with very long 

 and acute tip, not metabolic ; when swimming three definite areas 

 are formed by the body ; periplast weakly striate longitudinally ; 

 flagellum 1/2 length of body ; chloroleucites numerous, disciform ; 

 pyrenoids absent; paramylon in the form of 2 elongate rod-like 

 granules, one anterior and the other posterior to the nucleus. 



Reproduction by division without formation of thickened 

 membrane. 



L. 70-80/x. D. 8-14/x. 



Distribution, cosmopolitan. 



The species appears rather rare, but is easily known by its 

 peculiar tripartate areas when swimming. It is not metabolic. 



Ohio, Gambler (Academy Pond) ; Milford Center. 



*31. E. acus Ehrenb. (Fig. 8, PI. XIV). 



Extremely elongate, fusiform, tip attenuate, weakly meta- 

 bolic ; periplast weakly striated spirally ; flasrellum about 1/3 length 

 of body ; nucleus central, oval ; chloroleucites numerous, discoid ; 

 pyrenoids absent; paramylon elongate rods, usually 7-12 in num- 

 ber, scattered through protoplast. 



Reproduction ( ?). 



L. 70-200/z. D. 7-12/.,. 



Distribution, cosmopolitan. 



Two varieties have been recognized, var. minor' Hansg. 70-75/. 

 long and 4-6/x in diameter, from peat bogs, and var. rigida Hubner. 

 extremely rigid, 110/< long and 7.5/x in diameter, with paramylon 

 arranged spirally. The species is not found commonly. Dangeard 

 notes only isolated examples from two localities in France. The 

 Hiawatha Lake forms are somewhat larger than the dim.ensions 

 (180/x) ordinarily given. 



Ohio, Mt. Vernon (Hiawatha Lake) ; Milford Center; San- 

 dusky (Landacre), in vegetation from basket factory cove. 



32. E. limnophila Lemm. (Fig. 9, PI. XIV). 



Fusiform with straight or slightly bent needle-like tip, 

 slightly metabolic ; periplast scarcely striate ; flagellum short ; 



