SUCTORIA 



707 



Genus Rhynchophrya Collin. Oblong; bilaterally symmetrical; a 

 short striated stalk; 1 main long and a few shorter tentacles; 6-10 

 contractile vacuoles, each with a canalicule leading to outside; fresh 

 water. One species. 



Fig. 333. a, Pseudogemma pachystyla, X400 (Collin); b, Endosphaera 

 engelnianni, X500 (Lynch and Noble); c, Allantosom,a intestinalis, X1050 

 (Hsiung); d, A. dicorniger, X1300 (Hsiung); e, A. hrevicorniger, X1400 

 (Hsiung); f, Discophrya elongata, X440 (Collin); g, Thaumatophrya trold, 

 X1150 (Claparede and Lachmann); h, Rhynchophrya palpans, X440 

 (Collin). 



R. palpans C. (Fig. 333, h). 85 fx by 50^; tentacles retractile, 10- 

 200/1 long; stalk 20;u by 10/*; oij Hydrophilus piceus. 



