C 541 ] 



DIRECTIONS 



FOR 



PLACING THE PLATES 



OF 



THE NINETEENTH VOLUME. 



Tab. 1. 

 2. 

 3. 

 4. 

 5. 

 6. 

 7. 



8. 



9. 

 10. 

 11. 

 12. 

 13. 

 14. 

 15. 

 16. 



17. 



18. 

 19. 

 20. 

 21. 

 22. 

 23. 

 24. 

 25. 

 '26. 



|- Insects of the genus Derbe, &c to face page 18 



Cliococca tenuifolia 34 



Cyttaria Darwinii and Cytt. Berteroi 42 



Cryptolepis Buchanani 58 



Spiral cells in the testa of the seeds of Acanthacem 76 



Triuris hyalina 80 



Solenomelus Chilensis 98 



Edgeworthia buxifolia 102 



Coleopterous Insects from Silhet 112 



Lepidopterous Insects from Silhet 136 



Homopterous Insects from Silhet 136 



> ^gean OphiuricUe 152 



Peltophyllum luteum 160 



Development of the ovulum of Tropeeolum majus . . 1 70 



Development of the ovulum o{ Santalum, Osyris, Loranthus and Viscum . . 214 



Structure of iZfl^e«ia ^rno/rfi 238 



