INFUSORIA 



2. ToKOPHRYA Biitschli. Body not in a cup but at the end of a 

 stalk: several species; in fresh and salt water. 



T. quadripartita (Claparede and Lachmann). Body .1 mm. long: in 

 fresh water. 



Family 3. DENDEOSOMIDAE. 



Body without cup or stalk; tentacles 

 knobbed and arranged in gi'oups; reproduction 

 as in Acineta: 3 genera. 



1. Trichophrya Claparede and Lachmann. 

 Body irregular in shape and spread out; fre- 

 quently parasitic: in fresh and salt water. 



T. salparum Entz. On the branchial bars 

 of Molgula: at Woods Hole; often common. 



2. Dendrosoma Ehrenberg. Colonial ani- 

 mals on long and branching stalks which spring 

 from a creeping base: 1 species. 



D. radians Ehr. (Fig. 130). Colony up to 2 mm. high: in fresh 

 water. 



Fig. 130 — DendroRoma 

 radians (Doflein). 



