10 



PROC. ENT. SOC. WASH., VOL. 22, NO. I, JAN., 1920 



a 



Derefaphrus 



a ,, ., 

 Bothnderes . 



Cocoons of Bothrideridae a, Deretaphrus; b, Lithophanus; c, Bothrideres g. 



3. 

 4. 

 5. 

 6. 



Fig- 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 8. 

 Fig. 9. 

 Fig. 10. 

 Fig. 11. 

 Fig. 12. 

 Fig. 13. 

 Fig. 14. 



EXPLANATION OF PLATES. 

 Plate i. 



Aulonium tuberculatum -dorsal view of head. 



Aulonium tuberculatum dorsal view of right mandible. 



Nematidium filiform ] e dorsal view of right mandible. 



Aulonium tuberculatum ventral view of head. 



Phloeonemus catenulatus mesothoracic spiracle. 



Synchita fuliginosa dorsal view of head. 



Synchita fuliginosa ventral view of head. 



Synchita fuliginosa ventral view of thorax. 



Phloeonemus catenulatus dorsal view of right mandible. 



Nematidium filiforme dorsal view of head. 



Phloeonemus catenulatus dorsal view of ninth abdominal segment. 



Nematidium filiforme ventral view of head. 



Aulonium tuberculatum -lateral view of body. 



Aulonium tuberculatum -mesothoracic spiracle. 



