160 Kansas Academy of Science. 



2. Chlamydo7nonas. 



61. C. communis Snow. Plate III, fig. 17, 



Kansas: Augusta, August, 1915; Fredonia. August, 

 1915. 



Kansas: Jewell City, August, 1915; Chanute, Novem- 

 ber, 1915; Osawatomie, November, 1915; Cherryvale, 

 October, 1916; Burlington, April, 1916; Lyndon, 

 March, 1916. 



Family II. Volvocace^. 



1. Pandorina. 



Colony globose, of 16-32-64 rotund cells; cells surrounded 

 by a firm membrane. 



62. P. Mormn (Miill) Bory. Plate III, fig. 18. 

 Kansas: Burlington, April, 1916; November, 1915 



Lyndon, March, 1916; Emporia, August, 1916 

 Parsons, October, 1916; Garnett, August, 1916 

 Paola, November, 1915; Osawatomie, October, 1916. 

 Iowa (4); Missouri (11). 



Family III. Tetrasporace^. 

 Key to genera of Tetrasporacese. 

 ' I. Cells and colony with some definite form and arrangement. 

 * Cells radiately arranged in botryoidal mass. 



1. Botryococcus. 

 * * Cells not radiately arranged, without stalks, scattered more 

 or less in twos and fours, mature frond an expanded del- 

 icate membrane 2. Tetraspora. 



1. Botryococcus. 



63. B. Braunii Kuetz. Plate III, fig. 19. 

 Kansas: Gardner, June, 1916. 



2. Tetraspora. 



Key to Species. 



I. Frond an irregularly inflated sac. 



A. Almost colorless, cells spherical, by twos, variable in size, 3-12 

 mic. in diam T. gelatinosa. 



B. Green, cells elliptic, angular, unusually small and by twos, 5-7 

 mic. in diam T. e.rplanata. 



II. Frond at first tubular, but soon splitting into irregular segments, 

 often much perforate, of a yellowish color; cells 7-11 mic. in diam., 



generally in fours T. luhrica. 



OJf. T. gelatinosa (Vauch) Desv. 



Kansas: Council Grove, March, 1916. 

 Colo. (15); Iowa (4); Mo. (11). 



65. T. explanata Kuetz. 



Kansas: Emporia, March, 1916. 



66. T. Inbrica (Roth). 



Kansas: Lansing, October, 1916. 

 Colorado (15); Iowa (4); Neb. (25). 



Order III. PROTOCOCCALES. 



Key to the Families of Protocorcales. 



I. Cells united in regular, net- or disk-shaped colonies, not gelatinous 



III. Hydrodictyacese. 



