NOTES ON JAPANESE PROTOZOA. 



537 



Cyphoderia Schlumberger. C. ampulla Ehr. ; C. ampulla var. papil- 

 lata Wailes. 



The species is very common in Lake Hakone and was found in 

 other localities. Considerable variation in size and also in the 

 arrangement of plates occurs. The plates are usually placed in 

 diagonal rows, but this regularity is not always maintained. 



The variety was observed but once and that in material from 

 Lake Hakone. 

 Spkefioderia Schlumberger. S. lenta Schlumb. 



Very widely distributed and also very common in Japan. The 

 only species of the genus to be determined. 

 Euglypha Dujardin. E. alveolata Duj. ; E. brachiata Leidy ; E.filifera 

 Penard ; E. laevis Perty ; E. ditata Ehr. ; E. armata Wailes. 



A few species of this genus are very abundant in Lake Hakone 

 as well as in other localities. Two species, E. filifera and E. ciliata 

 were rarely observed, the others mentioned are common. 

 Assidina Ehrenberg. A. seminulum Ehr. 



Observed in material from Kyoto. A very typical form, choco- 

 late-brown in color. 

 Plagiopyxis Penard. P. callida Penard. 



Identified in material from Kyoto. Not common. 

 Trinema Dujardin. 77 enchelys Ehr. ; T. lineare Penard ; T. campla- 

 natum Penard. 



The genus represented by T. enchelys is very common in many 

 localities. The other two species were rarely observed. 



Class ACTINOPODA. Subclass HELIOZOA. 



Order APHROTHORACIDA. 



Actinophrys Ehrenberg. A. sol Ehr. 



Observed in great abundance at Kyoto ; rarely seen in other 

 localities. 



