414 BIOLOGY OF THE PROTOZOA 



Family Dendrosomidae. 



1 . Forms with stalk 2 



Forms without stalk 3 



2. Body much branched, finger-like. . .Genus Dendrocometes 

 Body bar-like, not digitate Genus Rhabdophrya 



3. Body attached 4 



Body free 6 



4. Body bilateral or slightly asymmetrical 



(Fig. 91; p. 185) Genus Trichbphrya 



Body flat 5 



5. With basal stolon; branches erect; often 



second branches (Fig. 159, p. 368) Genus Dendrosoma 

 No stolon; short unbranched processes, 



fascicled tentacles Genus Lernceophrya 



6. Body tetrahedral Genus Tetroedrophrya 



Body polyhedral 7 



7. With six similar protuberances Genus Staurophrya 



With eight radiate processes, each with a 



fascicle Genus Astrophrya 



Family Dendrocometidae. 



Arms branched, each branch with one sucker 



Genus Dendrocometes 



Arms not branched Genus Stylocometes 



Family Ophryodendridae. 



One genus only Genus Ophryodendron 



Family Podophryidse. 



1. Without test or cup 2 



With test or cup 3 



2. Normally with stalk, attached (Fig. 91, 



p. 185) Genus Podophrya 



Free-swimming or j^arasitic Genus Sphcerophrya 



3. Cup close-fitting, no visible rim. . . .Genus Paracineta 

 Cup not close-fitting, rim visible 4 



4. Tentacles numerous ; in fascicles (Fig. 91, 



p. 185) Genus Metacinaia 



Tentacles scarce ; one to three Genus Urnula 



Family Ephelotidae. 



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



p. 230) Genus Ephelota 



With cup and stalk Genus Podocyathus 



Family Hypocomidse. 



Only one genus, with family characters Genus Hypocovia 



SPECIAL BIBLIOGRAPHY. 



Chatton, E.: 1921, Les nicollellidse, infusoire.s intestiuaux des gondis et des 



damans et le "cycle evolutif" des eilies, Bull. biol. France, Belg., vol. 55 (1). 

 Collin, B. : 1912, Etude monographique .sur les Acin^tiens, Arch. zool. exp. et gen., 



vol. 5L 

 DoGiEL, V. : 1925, Die Geschlechtsprozess bei Infusorien (spez. bei den Ophryo- 



scoleciden). Arch. f. Protistenk, vol. 50. 

 Faure-Fremiet, E.: 1924, Contributions a la connaissance des infusoires plank- 



toniques. Bull. biol. P'rance, Belg., vol. 58. 

 Hartmann, M.: 1924, Ueber die Veriinderung der Koloniebildung von Eudorina 



elegans und Gonium pectoralo unter den Einfluss ausserer Bedingungen, Arch. f. 



Protistenk, vol. 49. 



