ACTINOPODA, HELIOZOA 



413 



cylindrical stalk with an enlarged base; small siliceous spicules; 

 nucleus in the base of stalk; multiplication by budding. 



Fig. 192. a, Clathrella foreli, X250 (Penard); b, Acanthocyshs aculeata, 

 X300 (Stern); c, Pompholyxophrys punicea, X260 (West); d, Raphidio- 

 phrys pallida, X300 (Penard); e, Raphidocystis tubifera, X500 (Penard); 

 f, Wagnerella borealis, X75 (Kiihn); g, Pinaciophora fluviatilis, X250 

 (Penard). 



W. horealis M. (Fig. 192,/). About 180^ in diameter; stalk often 

 up to 1.1 mm. long; salt water. 



