31. 



Genus Criconema Hofmanner and Menzel I9II4 

 (Key to specif^s after Chitvrood, 1957) 



1. Annules 100 or more 2 



Annules less than 100 3 



2. Annules about l50; spines short and wide 



souanosum (Cobb, 1913) Taylor, I936 



Annules probably 100-120; spines triangular, in 6 lonp;itudinal roiTrs 

 quemei (Certes, I889) Hoftnanner & Menzel, I9IU 



3. Fringe continuous on each annule k 



Fringe in strips or roijs of distinct spines present (not over 16 per 

 annule) 6 



U. Annules numbering U5; 70-80 spines in continuous fringe; stylet 98 

 microns (vide Sveshnikova 89 microns) 



multisquamatum (Kirjanova, 19li8) Chitwood, 19^7 



Annules 53 or more 5 



5. Annules numbering 53; about kO spines per annule in midregion; stylet 



96 microns long fimbriatum Cobb 1936 in Taylor, I936 



Annules numbering 60-70; about 60 spines in fringe; stylet 96-I3O 

 microns long mengeli (Stefanski, 192U) Taylor, I936 



6. Spines in a discontinuous fringe of 32-U8 per annule in 8 longitudinal 



bands civellae Steiner, I9U9 



Spines or scales in few (U-I6) longitudinal rows 7 



7. Spines in only k longitudinal rows: 1 dorsal, 1 ventral, 2 lateral; 

 69-73 annules; stylet Sb-60 microns long 



minutum (Kirjanova, 19U8) Chitwood, 1957 



Spines or scales in 8 or more longitudinal rows 8 



8. Spines or scales in 16 longitudinal rows • , 9 



Spines in U-12 longitudinal rows 10 



9. Spines rather blunt and scale like, not very narrow ev^en in posterior 

 body region; annules 62-6U; stylet 96 microns long 

 cobbi (Micoletzky, 1925) Taylor, 1936 



10. With I4-8 rounded scale rows; annules numbering 77; stylet about 52 

 microns long 



lentiforme (Stekhoven and Teunissen, 1933) Chitwood, 1957 



With 8, 10, 12, or 8-12 longitudinal rows of spines or scales. ... 11 



11. Scales in 8-12 or 12 longitudinal rows. 12 



Scales or spines in 8-10 longitudinal rows 13 



