156 Kansas Academy of Science. 



Sub-Order II. Euglenoidina. 



Free swimming animalcules, exceedingly flexible in form; spirally 

 marked resistent cuticle; chromatophores green; mouth and pharynx 

 evident, with long flagellum arising from mouth; vacuole at lower end 

 of pharynx with eye-spot close by Euglena. 



38. E. vinciis Ehrbg. Plate II, fig. 12. 



Kansas: Douglas, August, 1915; Horton, August, 

 1916, June, 1916; Lyndon, November, 1915; Osa- 

 watomie, February, 1917; Council Grove, October, 

 1916. 



Neb. (24) ; Mo. (11). 



CLASS III. 



HETEROKONT^ are characterized by yellow-green chromatophores 

 which are disc shaped, parietal, and lack pyrenoids; motile cells are 

 biciliate with cilia of unequal length ; reserve material is oil, not starch. 



Order I. CONFERVALES. 



The only family of this order found in our city water reservoirs is 

 the Confervacese, which are unicellular or filamentous. There are us- 

 ually many disk-shaped chromatophores, and the cells contain one or 

 more nuclei. 



Key to the Genera of Confervacese. 



A. Cells elongate, united into filaments, cell wall thin, breaking 



up into H sections; asexual reproduction by biciliate zoospores, 

 1-4 in a cell 1. Conferva. 



B. Cells elongate, solitary, rounded at one end and stipitate at 



the other; straight, arched, or spiral, often attached to water 

 plants 2 Ophiocytium. 



1. Conferva. 



Key to Species. 



I. Chromatophores numerous, filaments 6-11 mic. in diam., 2-4 or 6 

 diam. long C. Minor. 



II. Chromatophores numerous, filaments 6-11 mic. in diam., 2-4 diam. 

 long C. hoinhycina. 



III. Chromatophores numerous, filaments 6-16 mic. in diam. 1.5-6 diam. 

 long C. utriculosa. 



39. C. Minor Klebs. 



Kansas: Osage City, November, 1915; Masses, Cherry- 

 vale, March, 1916; Washington, April, 1916. 



JfO. C. bombycina Agardh. 



Kansas: Washington, November, 1915; Burlington, 



April, 1916; Cherryvale, August, 1915; Chanute, 



April, 1916; Horton, August, 1915; March, 1916; 



Neodesha, August, 1915; Mound City, April, 1916. 

 Colorado (15) ; Iowa (4). 

 j^l. C. ntriculosa. Plate II, fig. 13. 



Kansas: Marysville, August, 1915, November, 1915, 



April, 1916, August, 1916. 

 Iowa (4). 



2. Ophiocytium 



Jf2. O. cochleare Eichwald. 



Kansas: Douglas, August, 1915; Medicine Lodge, Au- 

 gust, 1915. 



