174 The Mastigophora 



Fig. 4. 40. A. Salpingoeca brunnea Stokes, with theca; x660 (after France). 



B. Codonocladium iimbellatum (Tatein) Stein, x325 (after Lemmermann). 



C. Desmarella moniliformis Kent, typical linear "colony"; x477 (after Lem- 

 mermann). D. Lagenoeca globulosa France, free-swimming loricate type; x530 

 (after Lemmermann). E. Diplosigopsis entzii France, sessile loricate type; x600 

 (after F.). F. Spliaeroeca volvox Lauterborn, x350 (after Lemmermann). G. 

 Protospongia hacckelii Kent, x442 (after Lemmermann). H. Codonosigopsis 

 socialis (France) Lemmermann, with double collar; x500 (after F.). L Diplo- 

 siga socialis Frenzel, with double collar; xl350 (after F.). J. Monosiga angus- 

 tata Kent, x2000 (after K.). K. Codosiga botn'tis Ehrbg.; length of body 

 (excluding collar), 7-16/n; body enclosed in a mucous envelope (outline em- 

 phasized); schematic (after Lapage). 



free-living species and parasites of invertebrates, vertebrates, and certain 

 plants. The life-cycle is often simple, but is dimorphic to polymorphic in 

 Trypanosomidae. Interrelationships of the different families are not en- 

 tirely clear and the limits of the order have been disputed to some extent. 

 For example, Trimastix Kent and Tricercomonas Wenyon and O'Connor 

 have been classified both with Protomastigida and the Polymastigida. 



