242 



PROTOZOOLOGY 



S. fusiforynis Kent (Fig. 110, b). Lorica short vase-like, about 

 15-16m long; body filling lorica; flagellum as long as body; fresh 

 water. 



Fig. 110. a, Bicosoeca socialis, X560 (Lauterborn); b, Salpingoeca 

 Jusijormis, X400 (Lemmermann); c, Diplosigopsis affinis, X590 

 (Franc6); d, Histiona zachariasi, x440 (Lemmermann); e, Poterioden- 

 dron petiolatum, X440 (Stein); f, Codonoeca inclinata, X540 (Kent); 

 g, Lagenoeca ovata, x400 (Lemmermann). 



Genus Diplosigopsis France. Similar to Diplosiga (p. 241), but 

 with lorica; solitary; fresh water on algae. 



D. affinis Lemmermann (Fig. 110, c). Chitinous lorica, spindle- 

 form, about \bn long; body not filling lorica; fresh water. 



Genus Histiona Voigt. With lorica; but body without attaching 

 filament; anterior end with lips and sail-like projection; fresh 

 water. 



H. zachariasi V. (Fig. 110, d). Lorica cup-like; without stalk; 

 about ISyu long; oval body 13/i long; flagellum long; standing fresh 

 water. 



Genus Poteriodendron Stein. Similar to Bicosoeca; but colo- 

 nial; lorica vase-shaped; with a prolonged stalk; fresh water. 



P. petiolatum (S.) (Fig. 110, e). Lorica 17-50/x high; body 21- 

 35m long; flagellum twice as long as body; contractile vacuole 

 terminal ; standing fresh water. 



Genus Codonoeca James-Clark. With a stalked lorica; a single 

 flagellum; 1-2 contractile vacuoles; fresh or salt water. 



C. inclinata Kent (Fig. 110,/). Lorica oval; aperture truncate; 

 about 23ju long; stalk twice as long; body oval, about 17/x long; 



