103. 



Subfaniily OXYSTaiATIWAE (Micoletzky, 192U) 

 (Key to the genera after Wieser, 1953) 



1. Aiiiphids elongated, slit-like 2 



Amphids pocket-like 5 



2. Caudal glands present Halalaimus de Man, 1088 3 



Caudal glands absent Halalainoides Cobb, 1933 



3. Amphids very large (UO^) Subg. Pachydora Wieser, 19^3 



Amphids narrow ll 



U* Two distant circles of cephalic setae .... Subg. Halalaimus s. str. 

 Two circles of cephalic setae close together 

 Subg. Tycnodora Cobb, 1920 



5. Amphids very large, almost circular, orifice narrow 



..... Thalassolaimus de Man, i893 



Amphids never very large 6 



6. Tail filiform Trefusia de Man, 1893 



Tail not filifoim Oxystomatina Filip.jev, 1918. . 7 



7. Tail short, rounded Subg, Nemanema Cobb, 1920 



Tail long, conical ...... Subg. Oxystomatina s. str. 



Closely related to Oxystomatina are For o coma Cobb, 1920 and Angusti- 

 nema Cobb, 1933 which are insufficiently known. 



