SUCTORIA 



Fig. 369. a, Parapodophrya typha, X270 (Kahl); b, Sphaerophrya 

 soliformis, X200 (Lauterborn) ; c, d, Paracineta limbata (c, a bud is 

 ready to leave; d, basal part of stalk), X460 (Collin); e, Metacineta 

 mystacina, capturing Halteria, X400 (Collin); f, Urnula epistylidis, 

 X140 (Claparede and Lachmann); g, Lecanophrya drosera, X390 

 (Kahl); h, Ophryocephalus capitatum, X200 (Wailes); i, Acineta lacustris, 

 X200 (Stokes). 



Genus Metacineta Biitschli. Lorica funnel-shaped, lower end 

 drawn out for attachment; tentacles grouped at anterior end; nu- 

 cleus spherical; one contractile vacuole. One species. 



M. mystacina (Ehrenberg) (Fig. 369, e). Lorica up to 700/x long; 

 in fresh and salt water. 



Genus Urnula Claparede and Lachmann. Lorica colorless; lower 

 end pointed, attached; aperture narrowed, round or triangular; body 



