524 BIOLOGY OF THE PROTOZOA 



Family 2. Discophryidae Collin. 



1. One primary tentacle; with or without 



secondaries 2 



With many tentacles 3 



2. With stalk Genus Rhynchophrya Collin 



No stalk; attachment by protoplasmic 



body Genus Rhyncheta Zenker 



3. Suctorial tentacles conical, with enlarged 



bases Genus Thaumatophrya ( \>llin 



Tentacles uniform in diameter 4 



4. Tentacles expansile at extremities for food- 



taking Genus Choanophrya Hartog 



Tentacles not expansile Genus Discophrya Lachmann 



Family 3. Dendrosomidae Butschli. 



1. Forms with stalk 2 



Forms without stalk 3 



2. Body much branched, finger-like. . Genus Dendrosomides Collin 

 Body bar-like, not digitate Genus Rhabdophrya 



Chat, and Collin 



3. Body attached 4 



Body free 6 



4. Body bilateral or slightly asymmetrical 



(Fig. 117, p. 228) .Genus Trichophrya 



Clap, and Lach. 

 Body flat 5 



5. With basal stolon; branches erect; often 



second branches (Fig. 196, p. 477) Genus Dendrosomn Ehr. 

 No stolon; short unbranched processes, 



fascicled tentacles Genus Lernaeophrya Perez 



6. Body tetrahedral Genus Tetraedrophrya Zykoff 



Body polyhedral 7 



7. With 6 similar protuberances Genus Staurophrya Zacharias 



With 8 radiate processes, each with a 



fascicle Genus Astrophrya Awerinzew 



Family 4. Dendrocometidae Stein. 



1. Arms branched, each branch with one 



sucker Genus Dendrocometes Stein 



2. Arms not branched Genus Stylocomeles Stein 



Family 5. Ophryodendridae Stein. 



One genus only Genus Ophryodendron 



Clap, and Lach. 

 Family 6. Podophryidae Butschli. 



1 . Without test or cup 2 



With test or cup 3 



2. Normally with stalk, attached Genus Podophrya Ehr. 



Free-swimming or parasitic Genus Sphaerophrya 



Clap, and Lach. 



3. Cup close-fitting, no visible rim. . . .Genus Parocineta Collin 

 Cup not close-fitting, rim visible 4 



4. Tentacles numerous; in fascicles. . Genus Metacinata Butschli 

 Tentacles scarce; 1 to 3 Genus Urnvla Clap, and Lach. 



Family 7. Ephelotidae Sand. 



No test or cup; with or without stalk (Fig. 



115, p. 226) Genus Ephelota Wright 



With cup and stalk Genus Podoci/aUnis Kent 



