1. 
   Haplotaxida
   (from the article `annelid`) ...clitellum 1 cell thick; 4 pairs of setae per segment; size, minute to 3 m; examples of genera: Moniligaster, Drawida.Order HaplotaxidaChiefly ...
   Found op http://www.britannica.com/eb/a-z/h/15
   
   
2. 
   Haplotaxida
   The Haplotaxida are one of two orders within the annelid subclass Oligochaeta, the other being the Lumbriculida. No real common name exists, but they are simply referred to as haplotaxids. Given that the other clitellatan annelids are embedded between and around the Haplotaxida and Lumbriculida, th...
   Found op http://en.wikipedia.org/wiki/Haplotaxida
   
   

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