59. 



Subfamily TYL^^CHINAt^ (de Man, 1376) Ilicol., 1922 

 (Key to the genera) 



1. Head anaed vfith setae 2 



Head not armed with setae 3 



2. Cuticle with transverse striae only ^utylenchus Cobb, 1913 



(Contains a single soecies E. setifersis fCobb, 1893) Cobb, 1913) 

 Cuticle with transverse and longitudinal striae 

 . .A tylenchus Cobb, 1913 



(Contains a single species A. decalineatus Cobb, 1913) 



3. Ovary one U 



Ovaries two 12 



U. Base of spear furcate Chitinotylenchus Micol., 1922 P.60 



Base of spear amalgamated, with or without basal knobs 5 



5. Esophageal glands overlapping intestine 6 



Esophageal glands in form of basal bulb, not overlapping intest- 

 ine 7 



6. Posterior portion of tails of both sexes characteristically hooked 



(Habitat marine) Halenchus Cobb, 1933 P.60 



Posterior portion of tail not hooked. (Habitat terrestrial) 

 Pseudhalenchus Tarjan, 1958 P.60 



7. Female with tail short, rounded and cuticle swollen 



Trophurus Loof, 1956 P.60 



Female with cuticle on tail not swollen 8 



8. Female tail attenuated 9 



Female tail conoid, subacute 10 



9. Median bulb in first half of esophagus. . . . Tylenchus Bastian, 1865 P. 61, 

 Median bulb in latter half of esophagus . . . Psilenchus de Man, 1921 P. 66 



10. Female body obese , Anguina Scopoli, 1777 P.6U 



Female body slender 11 



11. Lateral lips enlarged Sychnotylenchus , Ruhm, 1956 P.6U 



Lateral lios not enlarged Ditylenchus Filipj., 193U P. 65 



12. Female tail attenuated Psilenchus de Man, 1921 P. 66 



Female tail short, pointed or subacute. . . Tetylenchus Filipj., 1936 P. 67 



Others: Paranguina Kirjanova, 1955 



