10 



7 



8 



9 



10 

 11 

 12 



13 

 14 



15 



16 



17 

 18 



19 



20 

 21 



22 



Oribata 



Abel, round. — L. 650 li 13. O. orbicularis 



Abel, pyriform. — L. 650 li 15. O. piriformis 



Dors, of Abd. bearing a series of long hairs 



near margin — 9. 

 Dors, of Abd. hairless. — L. 450 li . . . 17. O. rubens 



C. lam. truncated; Lam. hair set in middle 



of ant. truncated edge. — L. 630 li . 5. O. fuscipes 

 C. lam. long and pointed ; Lam. hair springing 



from a shoulder near base. — L. 540 li 18. O. setosa 

 Dors, of Abd. hairless — 11. 

 Dors, of Abd. bearing hairs — 18. 



Ptm. strap-like; aquatic. — L. 320 li . . 19. O. sphagni 

 Ptm. normal; terrestrial — 12. 

 Psstg. org. clavate — 13. 

 Psstg. org. setiform or rod-like — 17. 



Lam. hair and Intlam. hair setiform — 14. 

 Lam. hair and Intlam. hair pectinated. — 



L. 500 li 3. O. depauperat 



Femur of leg 2 greatly enlarged at distal 



end. — L. 500 li 14. O. pallidula 



Femur of leg 2 normal — 15. 



Ptm. very small, confined to quite the ant. 

 part of Abd., Psstg. org. pointed 



anteriorly. — L. 1 mm 11. O. mieroptera 



Ptm. normal; Psstg. org. rounded anteriorly — 16. 

 Rost. slender; C. lam. long; legs long; no 



light patch on Dors, of Abd. — L. 480 li 8. O. gracilis 

 Rost. obtuse; 0. lam. short; legs moderate; 



light patches on Dors, of Abd. — L. 800 li 9. O. lapidaria 

 Abd. globidar; Psstg. org. rod -like. — 



L. 1.05 mm 7. O. globula 



Abd. long, truncated posteriorly. Psstg. org. 



setiform. — L. 1.13 mm 2. O. clypeata 



Hairs on Dors, of Abd. very long — 19. 

 Hairs on Dors, of Abd. short and fine — 20. 



Lam. nearly as long as Rost. ; Femur 1, 2, 



with blades; leg 4 hardly passes post. 



end of Abd. — L. 500 li 



Lam. much shorter than Rost. ; Femur 1, 2, 



without blades; whole Tarsus of leg 4 



passing post, end of Abd. — L. 750 li 



Rost. hairs, Lam. hair and Intlam. hair 



serrated. — L. 700 |u 1. O. antarctica 



Rost. hairs, Lam. hair and Intlam. hair 



setiform. — L. 600 li 10. O. lueens 



Lam. large, horizontal, attached by post. 



edge only, the 2 near together, only a 



narrow cleft between. (Sect. Ib 1. Gen. 



Oribatella, Banks) — 22. 

 Lam. normal on absent (Sect. Ib 2) — 29. 

 Ptm. truncated anteriorly, not projecting 



forward beyond ant. margin of Abd. — 23. 

 Ptm. projecting forward nearly to tip of 



Rost, — 28. 



12. O. mollieoma 



4. O. edwardsi 



