THE LIFE OF DEVILS LAKE 77 



Euglena deses. Common and of widespread occurrence in ooze 

 and Ruppia, in the main lake. Also taken in Mission and East 

 Lakes and Lake A. 



Phacus purum. Common, and widely distributed in the main 

 lake. Also numerous in Lake A. 



Eutreptia viridis. "From the surface among Ruppia" in 

 Lake A. 



Astasia tricophora. Common in Ruppia and algae. Wide- 

 spread in the main lake. Reported also in Lake A. 



Petalomonas mediocanellata. Occasional in ooze in the main 

 lake, and the surface of Lake A. 



Petalomonas sp. "From the ooze of Creel Bay." 

 Heteronema acus. "From Six-mile Bay and from the ooze of 

 Creel Bay." 



Anisonema grande. "Among Ruppia and algae at the head 

 of Creel Bay." 



Notosolenus sp. Occasional. Taken in Main and Stump Lakes. 

 Tetraselmis cordiformis. "Taken from Stump Lake only." 

 Polytoma uvella. Occasional in the main lake. 

 CMamydomonas pulviscidus. "Taken from the head of Creel 

 Bay." 



Glenodinium pidv is cuius. "Taken from the surface and from 

 the ooze at the bottom of Creel Bay." 



Holophrya ovum. "Among algae from Creel Bay." 

 Urotricha lahiata. Common in the main lake. 

 Prorodon teres. A fairly common and widely distributed spe- 

 cies in the main lake in Ruppia and algae. Also in Lake A. 



Prorodon edentatus. Occasional in Ruppia. Taken in Minne- 

 waukan Bay and Lake A. 



Enchelys sp. Noted by Edmondson in ooze of the main lake 

 and in overflow from a tank of lake water. What was probably 

 the same species was observed by me in the shells of rotifers in a 

 shore collection, July 20, 1914. 



Spathidium spatula. "Among algae from the head of Creel 

 Bay." 



Two indeterminate species of Spathidium were taken by Prof. 

 Edmondson. one in a Ruppia infusion from the head of Creel Bay 

 and one from "ooze of the main lake." 



Chaenia teres. "Among algae from the head of Creel Bay." 

 Mesodinium pulex. One of the most common Protozoa in the 

 lake, found in infusions of Ruppia, in surface tows and in the 

 ooze of the main lake. Undoubtedly occurs in other lakes of the 

 complex, but has not yet been observed other than in the main lake.. 

 Didinium nasutum. Occasional and of wide distribution in 

 Main Lake. 



