161. 



Genus Dorylaimoides Th. k Swanr^., 1936 



1. Ovary one conurus, Thome, 1939 



Ovaries two 2 



2. Length U-6 mm ditlevseni (Micol., 1922) Th, & Swang., 1936 



Length under 2 mm 3 



3. Tails blunt, rounded teres, Thorne, 1939 



Tails conoid, subdigitate, digitate, attenuate or filiform k 



U. Tails conoid or subdigitate 5 



Tails digitate, attenuate or filiform . 6 



5. Cuticle not in conspicuous layers 



. ele?ans (de Man, 1880) Th. & Swang., 1936 



Cuticle in distinct layers rhabdotus (Kreis, 1930) Th. & Swang., 1936 



6. Tails digitate micoletzkyi (de Man, 1921) Th. & Swang., 1936 



Tails attenuated or filiform 7 



7. Tails filiform. . . . longacaudatus (Lmmaura, 1931) Th. & Swang., 1936 

 Tails attenuated 8 



8. Male with 3-li supplements parvus Thome, 1939 



Male with 6 suoplements paulbuchneri Meyl, 1956 



Dorylaimoides stenodorus Altherr, 1953 appears to have more 

 characters of Dorylaimus than of Dorylaimoides and in this work is 

 considered as a species of the former. 



Genus Leptonchus Cobb, 1920 

 (Key to species modified from Thorne, 1939) , 



1. Vulva with lateral membranes fimbriatus Thorne, 1939 



Vulva without lateral membranes 2 



2. Tail with two caudal papillae 3 



Tail with one caudal papillae U 



3. Lip region off set; male with lU preanal papillae 



mult ipap illatus Meyl, 1956 



Lip region continuous; male with 3 preanal papillae 

 paucipapillat-us Meyl, 1956 



U, Prerectvim extending anteriad to ovaries granulosus Cobb, 1920 



Prerectum length about six times body width . . . obtusus Thorne, 1939 



