400 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



(Vol. 10 



Genus gomphosphaeria Kiitz. 



Gomphosphaeria aponina Ktitz. 



Usually present in abundance in the plankton of Lake P; 

 Strawberry Lake; Lake A; North Free Peoples Lake; Odessa, 

 I; South Free Peoples Lake; Willow Lake; Wheeler's Pond; 

 Lake Z, near Lake Williams; pond south of Brush Lake; North 

 Washington Lake; Buffalo Lake; Coe Lake; rare in Tokio Lake; 

 Creel Bay, Devils Lake; South Washington Lake; Lamoreau 

 Lake; Lake C. 



Var. cordiformis Wolle. 



Cut-off Pond, south end of Stump Lake; Lake P; plankton of 

 Lake Isabelle. 



Genus coelosphaerium Nag. 



Coelosphaerium Kuetzingianum Nag. 



Strawberry Lake. 



C. Naegelianum Unger. 



Plankton of Gravel Lake; Gordon Lake; Juanita Lake; Crooked 

 Lake; Spiritwood Lake, I; Coe Lake; Lake Isabelle; Lake Etta; 

 Tokio Lake; Red Willow Lake; Carpenter Lake; North Free 

 Peoples Lake. 



Genus merismopedia Meyen 



Merismopedia glauca (Ehr.) Nag. 



Slough below Wheeler's Pond; Crooked Lake; Lake Etta; 

 Lake C. 



M. punctata Meyen. 



Cut-ofT Pond, Stump Lake; Lake A; Wheeler's Pond, II; 

 Lake Williams; Red Willow Lake. 



M. tenuissima Lemm. 



Cut-off Pond, Stump Lake; Spring Lake; North Odessa, H; 

 Wheeler's Pond; Lake P; Crooked Lake; Florence Lake; Lake 

 Isabelle; Tokio Lake; Willow Lake; Lake C; Lake A. 



Genus holopedia Lagerh. 



Holopedia irregularis (Lagerh.) Hansg. Prod. 2: 141. 1892 

 = Merismopedia irregularis Lagerh. in Oefv. Kong. Sv. Vet. 

 Akad. Forh. 1883*: 43. pi 1, f. 5, 0. 1883). 



