SUCTORIA 629 



Endogenous budding 



Pellicle thin; with or without lorica; with or without stalk. . . 



Family 5 Acinetidae (p. 634) 



Pellicle thick; without lorica; tentacles a few, variable in form; 



stalk short, stout Family 6 Discophryidae (p. 638) 



With suctorial and prehensile. tentacles; with or without lorica; exog- 

 enous budding; commensal on marine hydroids 



Family 7 Ephelotidae (p. 641) 



Family 1 Dendrosomidae Blitschli 



Genus Dendrosoma Ehrenberg. Dendritic; often large; nucleus 

 band-form, branched; numerous contractile vacuoles; fresh water. 



D. radians E. (Fig. 285, a). Brownish; 1.2-2.5 mm. high; on 

 vegetation. 



Genus Trichophrya Claparede et Lachmann. Body small; 

 rounded or elongate, but variable; without stalk; tentacles in 

 fascicles, not branching; endogenous multiple budding; fresh or 

 salt water. 



T. epistylidis C. et L. (T. sinuosa Stokes) (Fig. 285, h). Form 

 irregular; with, many bundles of tentacles; nucleus band-form, 

 curved; numerous vacuoles; up to 240^1 long; on Epistylis, etc., 

 in fresh water. 



T. salparum Entz (Fig. 285, c). On various tunicates such as 

 Molgula manhattensis ; 40-60^ long; tentacles in 2 groups; salt 

 water; Woods Hole (Calkins). 



T. columhiae Wailes (Fig. 285, d). Q0-75fx by 40-48^ in diame- 

 ter; cylindrical; tentacles at ends; nucleus spherical; in marine 

 plankton; Vancouver (Wailes). 



Genus Astrophrya Awerinzew. Stellate; central portion drawn 

 out into 8 elongate processes, each with a fascicle of tentacles; 

 body covered by sand grains and other objects. One species. 



A. arenaria A. (Fig. 285, e). 145-188/i in diameter; processes 

 80-190)u long; in Volga river plankton. 



Genus Lernaeophrya Perez. Body large; with numerous short 

 prolongations, bearing very long multifasciculate tentacles; 

 nucleus branched; brackish water. One species. 



L. capitata P. (Fig. 285, /). Attached to hydrozoan, Cordylo- 

 phora lacustris in brackish water; 400-500/^ long; tentacles 400At 

 long. 



Genus Dendrosomides Collin. Branched body similar to 

 Dendrosoma, but with a peduncle; reproduction by budding of 

 vermicular form; salt water. One species. 



