Vrr;-:s. J:h 



KEY TO THE SPECIPS OF TYLENCHOlimNCHUS 

 (From Allen, 1955) 



Females 



1. Cuticle marked by longitudinal striae 2 



Cuticle not marked by longitudinal striae 6 



2. Lateral field marked by k lines 3 



Lateral field marked by 6 lines h 



3. Lip region bearing 3 or I4 annules claytoni Steiner 



Lip region bearing 6 or 7 annules lamelliferus (de Man) 



h' Annules extending around terminus of tail 



tessellatus J. B. Goodey 



Annules not extending around terminus of tail 5 



5. About 32 longitudinal striae at middle of body ornatus n. sp. 



About 60 longitudinal striae at middle of bo dy -quadrif er Andrassy 



6. Lateral field marked by h lines 7 



Lateral field marked by $ lines 19 



Lateral field marked by 6 lines 20 



7. Annules extending around terminus of tail 8 



Annules not extending around terminus of tail 12 



B. Lip region set off by constriction dubius (Butschli) 



Lip region continuous with body contour* 9 



9. Lip region bearing U or 5 annul csj tail tapering conoid 



eremicolus n. sp. 



