G. C. CRAMPTOX 225 



Fig. 23. — Ventral view of terminal structures of male dipteron Eriskilis tenax. 

 Fig. 24. — Lateral view of terminal segments of male and female dipteron 



Sciara sciophila, in coitu. 

 Fig. 2.'). — Dorsal view of terminal structures of male mecopteron Merope 



tuber. 

 Fig. 2(). — Lateral view of terminal structures of male mecoi)ter()n Bittacus 



pilicorius. 

 Fig. 27. — Dorsal view of terminal structures of male dipteron Chrysopila 



qiKidraUi. 

 Fig. 28. — Dorsal view of terminal structures of male mecopteron Naiino- 



chorista dipter aides, based on figure by Tillyard. 

 Fig. 29. — Lateral view of terminal structures of male homopteron Psylla sp. 

 Fig. 30. — Lateral view of terminal structures of male dipteron Rhampfiontyia 



mutahilis. 

 Fig. 31. — Lateral view of terminal structures of male mecopteron Boreus 



ttiroriundus. 

 Fig. 32. — Lateral view of terminal structures of male dipteron BiWicomorpha 



.sp. 

 Fig. 33. — Dorsal view of male mecopteron Panorpa maculosa. 

 Fig. 34. — Lateral view of terminal structures of male mecopteron Boreus 



bruinalis. 

 Fig. 35. — Lateral view of terminal structures of male dipteron Ptecticus 



trivittatas. 

 Fig. 3G. — Ventral view of terminal structure of male dipteron Limnophiln 



rujlhasls. 

 Fig. 37. — Lateral view of terminal structures of male tlipteron Prnmachus 



fitchii. 

 Fig. 38. — Lateral view of terminal structures of male dipteron Ormo.'<ia in- 



itoceus. 



TR\XS. AM. EXT. SOC, XLVIII. 



