[ 353 ] 



DIRECTIONS 



FOR 



PLACING THE PLATES 



OF 



THE TWENTY-FIRST VOLUME. 



Tab. 1. Atamisquea emarginata to face page 6 



2. Development of Ovules of Orchis pyramidalis and Orchis Morio 10 



rSpecies of Bolboceras 30 



5. Structure and oeconomy of Selandria Robinsoni, &c 42 



6. Species of Sciaphila 58 



7- Hyalisma ianthina and Soridium Spruceanum 58 



8. Anthophorabia fasciata 84 



9. Ichneumon Atropos, larva of Monodontomerus, &c 94 



10. Monodontomerus, Heteropus ventricosus', Anthophorabia fasciata, &c. 102 



11. Development of the Spores and Elaters of Marchantia polymorpha 110 



12. Pentaphylax euryoides 116 



13. Ixionanthes Chinensis 116 



14." 



15. /-Development of Ferns from their Spores 138 



16.. 



17- Oxytheca spiculata 148 



18. Oxycladus aphyllus 148 



19. Species of Badhamia and Corynites Ravenelii 154 



20. Anatomy of Meloe 184 



21. Aquilaria Agallochum 203 



22. Acradenia Franklinice 209 



23. Species of Myrmica 220 



24. Ancistrocladus Vahlii, and Elaters of Trichia 223 



25. Hypocephalus armatus, and Cyrtognathus rostratus , . . . . 236 



