EXPLANATION OF PLATE XX. 



All the drawings were made by J. Henry Blake. 



Fig. 1. (6050) (f) Palecphora pnevalens. 



2. (5058) (f) Palaphrodes irregularis. 



3. (13584) (}) Palecphora comrnunis. 



4. (9900) (") Aporema pue.stiictimi. 



5. (Od) ({) Petrolystin gigautea ?. 



ti. (411) ({) Petrolystra gigauti-a. (Copied 

 byZiltel.Handli.il. p;il; il., Fig. MM.) 



7. (4l'J) ( ! ) Petrolystra gigantea. 



8. (U829) (-{-) Petrolystra beros. 



9. (lldliT) (t-) A small fly. t'.niud on the name 



.-,10110 witb the next, pi-i-bap.H brlniiging 

 to tbe TacbydroraidiE, but \vlio.se |>recise 

 affinities it is perhaps impossible to 

 trace. 

 706 



Fig. 10. (11237) (f) Palecphora inaculata. 

 11. (()484) (fj Palecphora marvinei. 

 la. (6484) (^)) Palecphora marviuei. 

 l:i. (6484) (f ) Palecpbiira marviuei. 



14. (11774) ('f) Priurephnra liulteala. 



15. (G09) ('/) Palecphora inornuta. 



16. (58-J) (t) Palaphrodes cincta. 



17. (;!5:!4) (f) Palecphora mac nlata. 



18. (43) (7) Palaphrodes invgularis. 



19. (6639) (V) Jassus ? latebra-. 



JO. (13570) (f) Palecphora coniiiinuiH. 



21. (159) (f) Palecphora coaunnnis. 



22. (1.121) (?) Lithecpbora setigera. 



