150 (DK. A. C. OUDKMANS). NOTES ON ACARI. 



I AU the legs equal in length , 

 short and thick ; legs 3 and 4 

 usually turned backward . . 9 

 All the legs slender; legs 3 and 4 

 shorter and slenderer than land 

 2 and usually turned forward .12 

 Four pairs of suckers after one 



„ , another Aleurobius Can. 



Sucker-plate with 8 suckers, 

 arranged 2, 4, 2 . . . .10 

 I Anterior top of Gephth. hairless. Tyroglyphus Latr. 

 10. Top of Gephth. with 2 minute 



^ hairs 11 



Epimera 1 very short, joined to 

 the sternum; epimera 3 and 4 

 joined to each other with a 



large bow Hypopus Dugès. 



Epimera 1 absent; sternum 

 free; epimera 3 and 4 free. Glycyphagus Hering. 



12. Only one genus Anoetus Dujard. 



13. Only one genus Histiogaster Beri. 



Arnhem, A. G. Oudemans. 



1 October 1901. 



11 



