11 



INDEX TO FIGURES. 



Note. — In the figures of wings a 6 is the " primary stalk ; " & c is the 

 *' stalk of the cubitus ; " 6 c^ is the " stalk of the subcosta ; " h g, h f, is 

 the " subcosta ; " a /is the " radius ;" c e, c h is the " upper branch of 

 the cubitus ; " c h, c m is the " lower branch of the cubitus ; " a « is the 

 clavus." 



In the figures of genitalia, a is the " genital-plate ;" h is the 

 c is the " abdominal extremity." 



All the figures are highly magnified, except fig. 16. 

 Fig. 



Psylla Lidgettif pupa. 



*' " adult insect, dorsal view. 



'* " fore wing. 



" *' genitalia of male, side view. 



Aphalara tecta, shields on leaf. 



forceps ;' 



1. 



2. 



3. 



4. 



5. 



6. 



7. 



8. 



9. 

 10. 

 11. 

 12. 

 13. 

 14. 

 15. 

 16. 

 17. 



pupa. 



head of adult, 

 antenna. 



genitalia of male, 

 forewing. 

 Trioza multitudinea, galls on leaf. 



pupa. 



adult insect. 



genitalia of female. 

 (( (( 



genitalia of male, 

 forewing. 



more highly magnified. 



