EXPLANATION OF PLATE XL 



Achorutes schneideri Schaff. 

 Fig. 



1. Foot 



2. Right eye patch 

 Achorutes socialis Uzel. 



3. Foot 

 Achorutes schotti Rent. 



4. Foot 



Achorutes longispinus Tullb. 



5. Foot 

 Podura aquatica Linn. 



6. Foot 



7. Tenacnlum 



8. Furcula, extended, seen from above 



9. Furcula, lateral view 



10. End of furcula, ventral view 



11. Antenna 



Xenylla gracilis n. sp. 



12. Right eye patch 



13. Posterior abdominal segments 



14. Anal horns, seen from above 



15. Furcula 



Friesia caldaria n. sp. 



16. One of the anal horns 



17. Lateral view of posterior part of the abdomen 



1 8. Furcula 



