SUCTORIA 865 



D. radians E. (Fig. 367, a). Brownish; 1.2-2.5 mm. high; on vege- 

 tation. Morphology (Gonnert). 



Genus Trichophrya Claparede and Lachmann (Platophrya Gon- 

 nert). Body small; rounded or elongate, but variable; without stalk; 

 tentacles in fascicles, not branching; simple or multiple endogenous 

 budding; fresh or salt water. 



T. epistylidis C. and L. (T. sinuosa Stokes) (Fig. 367, b). Form 

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

 curved; numerous vacuoles; up to 240/x long; on Epistylis, etc., in 

 fresh water. Morphology (Gonnert). 



T. salparum Entz (Fig. 367, c). On various tunicates such as 

 Molgula manhattensis; 40-60/u long; tentacles in 2 groups; salt water; 

 Woods Hole (Calkins). 



T. columbiae Wailes (Fig. 367, d). 60-75/u by 40-48/z in diameter; 

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

 Vancouver (Wailes). 



T. microptcri Davis (Fig. 367, e). Body elongate, irregular or 

 rounded; up to 30-40/* long by 10-1 2n\ fully extended tentacles 10- 

 12/x long; cytoplasm often filled with yellow to orange spherules; a 

 single micronucleus; a single contractile vacuole; attached to the gill 

 of small mouth black bass, Micropterus dolomieu. Davis (1942) states 

 that when abundantly present, the suctorian may cause serious in- 

 jury to the host. 



Genus Erastophrya Faure-Fremiet. Pyriform; distributed tenta- 

 cles; posterior end drawn out into two "arms" by means of which 

 the organism grasps the stalk of a peritrich; fresh water (Faure- 

 Fremiet, 1943). One species. 



E. chattoni F.-F. (Fig. 367,/). Body up to 130^ long; macronucleus 

 spherical to sausage form; a single micronucleus; a contractile 

 vacuole; endogenous budding, gemma about 40 ju long; a commensal 

 on Glossatella piscicola. 



Genus Astrophrya Awerinzew. Stellate; central portion drawn out 

 into 8 elongate processes, each with a fascicle of tentacles; body cov- 

 ered by sand grains and other objects. One species. 



A. arenaria A. (Fig. 367, g). 145-188^ in diameter; processes 80- 

 190m long; in Volga river plankton. 



Genus Lernaeophrya Perez. Body large; with numerous short pro- 

 longations, bearing very long multifasciculate tentacles; nucleus 

 branched; brackish water. One species. 



L. capitata P. (Fig. 367, h). Attached to the hydrozoan, Cordy- 

 lophora lacustris in brackish water; 400-500/j long; tentacles 400^ 

 long. Morphology (Gonnert). 



