1. 
   Spirostomum
   Spirostomum caudatum Spirostomum inflatum Spirostomum intermedium Spirostomum minus ``Spirostomum semivirescens Spirostomum teres Spirostomum is a genus of free-living ciliate protists, belonging to the class Heterotrichea. Species of Spirostomum are found in both salt and fresh water. All are elon...
   Found op http://en.wikipedia.org/wiki/Spirostomum
   
   
2. 
   Spirostomum
   Genus of large free-living ciliate protozoans with an elongated body.
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   

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