''r<x,-J..i v: 



n.p., ai)d Punrentiis n.f:." (ibid, 6(l4):l-223 of 1936) is indj.spensible 

 for IdoiiMfirMtJon of Dorylaims to species. Forhunately, fchcso two 

 lr>r[-;c workr which had been out of print can now be obtained nnain. 

 (Ilnrt.inijs Ni.ihoff, Publisher, Post Office Box //269, The Hafjue, Nether- 

 lands, or through other booksellers. Price at last listing (N^y, 1959) 

 was 3P guilders each (approx. $10.10).) 



Though Dorylaims are often found in large numbers around the roots of 

 plants and many have stylets vxhich would seem to be well adapted for 

 feeding on plants, there is little or no evidence that they are ever 

 serious plant parasites, with the exceptions- of species of the genera 

 Xiphinema , Trichodorus , and Longldorus . Except for these genera, one 

 seldom finds large numbers of a single species of Dorylaims around the 

 roots of plants, as would be expected if they are dangerous plant para- 

 sites. Some are believed to be predators, feeding on nematodes and 

 other small soil animals. 



Kononchus species are easy to recognize, since they have a cylindrical 

 oesophagus and a somewhat globiilar mouth cavity, usually with one or 

 more teeth. Mononchus species are predatory. 



(fe- ^o'-' "••"< V\ 



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