602 PROTOZOOLOGY 



bands on both lateral surfaces; 2 spines on right side; 2 cirrus- 

 like groups on posterior-left; sapropelic. A few species. 

 D. pectinata L. (Fig. 272, e,f). 70-90/i long; sapropelic. 



Family 3 Mylestomidae Kahl 



Genus Mylestoma Kahl. Posterior margin without any inden- 

 tation, though sometimes a small one on right side, but none on 

 left; 3 often long ribbon-like cirri on peristome; fresh or salt 

 water. Several species. 



M. hipartitum (Gourret et Roesner) (Fig. 272, g). 35-50^1 long; 

 salt water. 



Genus Atopodinium Kahl. Posterior left side with one large, 

 and right side with 2 indentations; macronucleus spherical; 

 sapropelic. 



A.fihulatum K. (Fig. 272, h). 40-50m long. 



References 



Kahl, A. 1932 Ctenostomata (Lauterborn) n. subord. Arch. f. 



Protistenk., Vol. 77. 

 1932 Urtiere oder Protozoa. In Dahl's Die Tierwelt 



Deutschlands. Part 25. 



