POJIPHOLYXOPHRYS PUNIOEA. 43 



The ectoplasm is usually of a red tint, due to 

 numerous granules of various shades of colour, and in 

 addition to these, food particles of vegetable origin 

 varying in colour from green through yellow to brown 

 are generally present. 



Large spherical bodies are sometimes found in the 

 plasma which may attain a diameter equal to half that 

 of the animal itself ; they appear to be cysts and are 

 enclosed in a rigid membrane with a granulated 

 surface. 



The large nucleus is usually hidden from view by 

 the numerous inclusions in the plasma and perhaps 

 for the same reason no central granule has been 

 detected. 



Division by binary fission was observed by Cash, the 

 process occupying about 30 minutes. 



2. Pompholyxophrys ovuligera Penard. 



(Text-fig. 187.) 



Pompholyxophrys ovuligera 



Pbnaed Heliozoaires, 1904, p. 214, fig. 

 Brown Ann. Scot. Nat. Hist. 1912, p. 113. 



Body small, spherical ; outer envelope composed of 

 three or four layers of ovoid globules in a sparse 

 mucilaginous investment ; ectoplasm usually reddish 

 in colour, containing numerous coloured granules, also 

 food pai"ticles ; endoplasm not distinctly differentiated ; 

 nucleus large, placed eccentrjcally, containing a single 

 small nucleolus; contractile vesicles usually absent; 

 pseudopodia tenuous, finely granuliferous. 



Diameter of body about 25 ju, to 30 ju, ; diameter of 

 outer envelope 6 /a to 10 /a larger; sphei'ules in outer 

 investment 2 ju, to 3 /a in larger diameter. 



Habitat. — Moorland pools. 



Distribution. — England. — Isle of Wight {Broivn). 



Scotland. — Isle of May (Broivii). 



This species resembles P.punicea in its active and 



