400 HANDBOOK OF PROTOZOOLOGY 



With proboscis or special arms 



With a retractile proboscis which bears tentacles 



Family 2 Ophryodendridae 



With special arms with tentacles Family 3 Dendrocometidae 



Body somewhat bilaterally symmetrical 



Exogenous budding and division Family 4 Podophryidae 



Endogenous budding 

 With delicate pellicle. With or without cup-like test; with 



or without stalk Family 5 Acinetidae 



With tough pellicle; tentacles may be small in number and 



variable in form; stalk short and stout . . .Family 6 Discophryidae 

 With both suctorial and prehensile tentacles; with or without test; 



exogenous budding; ectoparasitic on marine hydroids 



Family 7 Ephelotidae 

 Adult with cilia Family 8 Hypocomidae 



Family 1 Dendrosomidae Biitschli 



Genus Trichophrya Claparede and Lachmann. Body small 

 and form variable. Without stalk. Tentacles in fascicles. No 

 branches. Attached usually to animals in both fresh and salt 

 water. About ten species known. 



Trichophrya epistylidis Claparede and Lachmann (= T. 

 sinuosa Stokes) (Fig. 171, a). Fresh water. About 40 microns 

 in length. 



Trichophrya salparum Entz (Fig. 171, h). Living on the 

 external body surface of various tunicates, such as Molgula 

 manhattensis . 



Genus Astrophrya Awerinzew. Body with eight processes, 

 each with a fascicle of tentacles. 



Astrophrya arenaria Awerinzew (Fig. 171, c). Found in 

 the plankton of the Volga. The main body measures 145 to 

 188 microns in diameter; the length of the processes 86 to 190 

 microns. 



Genus Lernaeophrya Perez. Body large; with numerous 

 short prolongations bearing very long fascicled tentacles. With 

 a branching nucleus. 



Lernaeophrya capitata Perez (Fig. 171, d). Attached to the 

 stalk of the hydrozoan, Cordylophora lacustris. Body 400 to 

 500 microns long; tentacles 400 microns long. 



Genus Dendrosoma Ehrenberg. Large form often 2 mm. 



