EXPLANATION OF PLATE IL 



Sminthurus fuscus (L.). 



Fig. 

 I. Furcula, lateral view 

 2a. Genital papilla, lateral view 

 2b. Genital papilla, ventral view 

 3a. Tenaculum, lateral view 

 3b. Tenaculum, seen from behind 

 4. Mucrones 



5a. Anal organ, seen from above 

 5b. Anal organ seen laterally 



6. Left eye patch. 



7. Foot, I St pair 



8. Antenna of a young individual 



9. Antenna of a mature individual 



Sminthurus minnesotensis n. sp. 



10. Antenna 



11. A dorsal bristle 



12. Mucrones 



13. Right eye patch 



14. Foot, 3d pair 



15. Foot, 2nd pair 



16. Vertex of head;, oblique lateral view 



