of the Galapagos Archipelago. 167 



rica, and even found so far north as Boston, U.S., the only specimens which 

 have come under my observation with the lower pinnae forked, are the above, 

 and Mr. Purdie's from Jamaica. 



17. M. ENSiFOLiA, Presl (Polypodium, Sw.). 



Hab. James Island. Common to all the warm regions of South America and the West 

 Indies. 



18. Pleopeltis lepidota, Wdld. 



Hab. Charles Island, Charles Darwin, Esq. Abundant throughout the tropics, and pro- 

 bably not distinct from the following species. 



19. P. MACROCARPA, Kaulf. 



Hab. James Island, Charles Darwin, Esq. 



The fronds in these specimens are strictly lanceolate and attenuate at both 

 ends; exactly according with individuals from Peru. 



20. P. AUREA, Presl (Polypodium, L.). 



Hab. James Island, Charles Darwin, Esq. Also a frequent plant in South America. 



Fronds generally pinnatifid, but in one (probably monstrous) specimen, 

 there are four digitate spreading pinnae. 



21. Campvloneurum Phyllitidis, Presl (Polypodium, Sw.). 



Hab. James Island, Charles Darwin, Esq. Common all over tropical South America. 



22. Olfersia Langsdorffii, Presl (Acrostichum, H. 8^ G.). 

 Hab. James Island, Charles Darwin, Esq. 



23. O. visciDA, Presl (Acrostichum, Auct.). 



Hab. James Island, Charles Darwin, Esq. West Indies, abundant. 



24. Hemionitis pinnata, Hook.Jil.; frondibus biformibus (ex eadem radice) 

 supra nudis subtiis dense rufo-paleaceis, sterilibus sessilibus elongato- 

 spathulatis obtusis, fertilibus sublong^ stipitatis pinnatis, pinnis linearibus 

 elongatis obtusis integerrimis subtils undique soriferis, soris paleaceis. 



Hab. Charles Island, Charles Darwin, Esq. 



Radices caespitosi, fibrosi ; fibris atrls repentibus. Frondes steriles 10-12, undique patentes. 



