CHRYSAMOEBA Klebs 1893, p. 406 



A free-swimming, irregularly radiate amoeboid, sometimes with 

 1 long flagellum and 2 plate-like, golden-brown crhomatophores, a 

 large noncontractile and 2 smaller contractile vacuoles; in the amoe- 

 boid condition solitary or clustered, with radiating pseudopodia. 



Chrysamoeba radians Klebs 1893, p. 406 

 PL 99, Fig. 6 

 Characteristics as described for the genus; cells 8-10/a in diameter, 

 12-15/x long in the flagellate condition; 35-40/i, including pseudopo- 

 dia in the amoeboid phase. 



Rare; in euplankton. Mich., Wis. 



RHIZOCHRYSIS Pascher in Pascher & Lemmermann 1913, p. 90 



An irregularly shaped, naked, amoeboid unicell with numerous 

 radiating needle-like, or stout pseudopodia, cells sometimes united 

 in temporary colonies and invested in a sheath; chromatophores 1 

 or 2 golden-yellow plates; vacuoles present or absent; reserve food 

 in the form of leucosin and oil; flagellated stage apparently lacking. 

 Wis. 



Rhizochrysis limnetica G. M. Smith 1920, p. 77 

 PL 98, Fig. 2 



Cells free-floating, irregularly globose with many radiating, needle- 

 like pseudopodial processes; 1 golden-brown chromatophore; vacu- 

 oles numerous and small; cells 35-45)u, in diameter without processes. 



Rare; in the plankton of many lakes. Wis. 



CHRYSIDIASTRUM Lauterborn in Pascher & 

 Lemmermann 1913, p. 91 

 Cells globose, free-floating, with delicate pseudopodia, joined by 

 radiating processes to form linear colonies of 2-16 individuals; 

 chromatophore a central plate or band. 



Chrysidiastrum catenatum Lauterborn in 

 Pascher & Lemmermann 1913, p. 91 

 PL 99, Fig. 7 

 Characters as described for the genus; cells 12-15yu, in diameter 

 without processes, 45-60/x wide including processes. 

 Rare; in euplankton of several lakes. Wis. 



LAGYNION Pascher 1912, p. 155 

 An epiphytic flask- or bottle-shaped lorica inclosing a naked, pig- 

 mented protoplast; lorica hyaline, or often brown and supposedly 



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