11^. 



Gomis Fono ricbps Par.tian 1366 

 (Key to speciss from Allnn, 19^0) 



1. Dorsal tooth inidwaj'' in pharynx, or higher, -usually mas.sive 2 



Dorsal tooth basal or nearly so, small ^0 



2. Tooth not onoosed by denticles 3 



Tooth opposed by nimerous denticles 2$ 



3. Dorsal tooth faced by 2 ventrally submedian teeth Ii 



Dorsal troth not faced by submedian teeth 10 



U. Teeth retrorse tridentatus de Man, 18/6 



Teeth not retrorse $ 



5. Tail conoid, then cylindroid; body 7.0 mm. lon^ . . .' . rex Cobb, 190U 

 Tail simply conoid; body 3-0 mm. long or less 6 



6. Spinneret and caudal glands absent 7 



Spinneret and caudal glands present 8 



7. Length about 2.0 mm exilis Cobb, 1917 



Length about h.O mm trionchus Thome, 192h 



8. Contour of head angular; labial papillae 16 . . . . radiatus Cobb, 1917 

 Contour of head rounded; labial papillae 12 9 



9. Pharynx longer than width of head palustris Cobb, 1917 



Pharjmx only as long as width of head teres Cobb, 1917 



10. Ovary 1; pharynx not much longer than wide . . . monhystera Cobb, 1917 

 Ovaries 2; pharynx about twice as long as wide 11 



11. Tail simply conoid, 8 per cent or less 12 



Tail conoid, then cylindroid, about 10 per cent or more 18 



12. Spinneret absent 13 



Spinneret present 15 



13. Pharynx over half as wide as head vorax Cobb, 1917 



Pharynx not over half as wide as the head lU 



lii. Length about 1 mm.; tooth midway, small, digitate . paruus de Man, 1879 

 Length 1.5 to 2.0 mm.; tooth beyond midway, massive 

 papillatus Bastian, 1866 



15. Body 2 mm. long I6 



Body 3 to U mm. long 17 



