364 OHIO BIOLOGICAL SURVEY 



The var. mino7' Hansg. has a length of 18-20/x and a diameter 

 of 4.5-5/^. E. piscifoi'mis is a small species with swimming move- 

 ments analogous to those of a fish, whence the name. The body 

 becomes metabolic to a slight extent when the individual ceases 

 swimming. 



Gambler, 0. Pool "Hotel Hill," var. minor (18/j in length). 



8. E. terricola (Dang.) (Fig. 8, PI. XH). 



Cylindrical, elongate, tip distinct, decidedly metabolic ; peri- 

 plast weakly striate spirally ; flagellum V2 length of body ; nucleus 

 central ; chloroleucites numerous, band-like, arranged longitudi- 

 nally posterior to nucleus ; pyrenoids 2, enclosed in paramylon ; 

 paramylon granules small, short, cylindrical. 



Reproduction. 



L.(?). D.(?). 



Distribution, cosmopolitan ( ?). 



9. E. splendens Dang. (Fig. 9, PI. XH). 



Oval with short tip ; periplast with prominent punctuations 

 arranged spirally ; flagellum longer than the body ; nucleus central ; 

 chloroleucites numerous, ribbon-like, arranged spirally between 

 striate punctuations; pyrenoids absent; paramylon round, rarely 

 rod-like. 



Reproduction by longitudinal division. Encystment with 

 division in spherical condition. 



L. 70-80/x. D. 22-27/,. 



Distribution, France, Casette near Potiers. 



Distinguished from other species by the peculiar arrangement 

 of chloroleucites, more numerous and shorter than in E. sanguimea 

 and without pyrenoids. 



*10. E. sanguinea Ehrenb (Fig. 10, PI. XH). 



Elongately oval, red, fusiform to cylindrical, with short tip, 

 metabolic; periplast striate spirally with indistinct punctuations; 

 flagellum 2 times length of body; chloroleucites in the form of 

 rods or ribbons or extremely notched disks; pyrenoid with shell; 

 paramylon round or oval; green chlorophyl of the chloroleucites 

 obscured by the red haematochrome which may however disap- 

 pear in small aquaria with changed metabolism. 



