ILLUSTRATIONS. 
PLATE I. 
Fig. 1. Davallia decurrens. Transverse section of rachis of pinna. X 20. 
2. Stenosemia pinnata. Sinus seen from above, with hairs. X 20. 
3. Huinata parvula. Transverse section, nether epidermis. X 320, 
4. Davallia brevipes. Same. X 320. 
5. Asplenium squamulatum. Same. X 320. 
6. Seolopendrium pinnatum. Cell of upper epidermis, surface view. X 320. 
7. Vittaria faleata ( ?). Spicular cell, surface view. X 175. 
8. Same, in transverse section. X 175. 
9. Polypodium revolutum. Stoma. X 320. 
10. Niphobolus nummularisefolius. Stoma. X 320. 
11. N. varius. Stoma, transverse section. X 320. 
12. Same. Surface view; limit of exterior chamber shown by dotted lines. 
X 320. 
13. Stenochlaena subtrifoliata. Stoma. X 320. 
14. Polypodium caespitosum. Transverse section of frond. X 75. 
16. P. accedens. Surface view; upper epidermis dotted, hypodermis in solid 
lines. X 175. 
17. P. sinuosum. Tangential (“surface”) section of upmost green layer. 
X 320. 
PLATE II. 
Fig. 15. Drynaria quercifolia. Surface view; upper epidermis dotted, hypodermis 
in solid lines. X 320. 
18. Niphobolus adnascens. Mesophyll cell, in water. X 175. 
19. Asplenium Phyllitidis. Section across two sori. X 20. 
20. Seolopendrium schizocarpum. Section across double sorus. X 20. 
21. Polypodium obliquatum. Section of sorus. X 41. 
22. Vittaria alternans. Transverse section of frond, showing paraphyses, but 
without sporangia. X 20. 
23. Aspidium angulatum. Indusium, with depressed center. X 27. 
24. Achrostichum aureum. Paraphysis head. X 175. 
25. Nephrodium diversilobum. Sporangia. X 75. 
26. Cheiropleuria bicuspis. Stoma of fertile frond. X 175. 
27. Same. Stoma of sterile frond. X 175. 
28. Lomagramma pteroides ( ?). Half of transverse section of frond, sporangia 
wanting. X 27. 
29. Diplazium bulbiferum. Epidermis of nether surface. X 175. 
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