'A. 



Family CYATHOLAIi^iIDAE de Coninck & Stekhoven, 1933 

 (Key to the subfamilies Chitwood, 1951) 



1. Stoma deep, two parts with 6 or 12 heavily sclerotized ridces 



CHOAMOLAD'lINAE Filipjev, 193U P.96 



Stoma shallow 5 



2. Stoma with 2 or 3 O^ws bearing sclerotized complex mandibles 

 SELACHINMATINAE (Cobb, 1915) P. 96 



Subfamily ETHMOLAIFINAE Filipjev k Stekhoven, 19U1 

 (Key to the genera after Wieser, 195U) 



1. Three vigorous teeth; no lateral differentiation •• 2 



One dorsal tooth only; irregular lateral differentiation present 

 ........ Neotonchus Cobb, 1933 



2. Supplements absent; no genuine pharyngeal bulb; buccal cavity shallow 

 Spiliphera Bastian, 1065 



synJ Spilophora Bastian, 1865 nee. Boheman 1850^ Statsnia 

 Allgen, 1930 and Spilophorum Cobb, 1933) 

 Supplements present, numerous; pharyngeal bulb present; buccal cavity 

 deep, cylindrical in posterior portion Ethmolaimus de Man, 1880 



Subfamily CHRO^iADGRINAE Micoletzky, 1922 

 (Key to the genera after Wieser, I95I4.) 



1, Amphlds slit-like, oval, or loop-shaped, not circularly spiral. . . 2 

 Amphids circularly spiral, indistinct . . .CHRaiADOROPSIS Wieser, 195U 



syn. Chromadorop si s Filipjev, l8l9 ex parte 



2, Teeth hollow or absent ' 3 



Teeth solid lU 



3, Cuticle markings homogeneous U 



Cuticle heterogeneous . 9 



U, Lateral differentiation present; tail short or elongate 5 



Lateral differeritiation not present; tail not elongate. . Ghromodorita 

 Filipjev, 1922 syn: Odontonema Filipjev, 1930, Algeniella 

 Strand, 193il, 



5. Longitudinal rows present 6 



Longitudinal rows not present (lateral date enlarged) 



Denticulella Cobb, 1933 



6. Two or U longitudinal rows; tail not elongate 7 



Three longitudinal rows; tail elongate, . . Trichromadora Kreis, 1929 



7. Buccal cavity armed with teeth, rarely with additional denticles. . 8 

 Buccal cavity exclusively armed with denticles. .Dasylaimus Cobb, 1933 



