DERIVATION OF THE FLORA AND FAUNA 225 



1. Neotropical and Andean element. Species either found in Centr. and S. Chile or 

 endemic but allied to Chilean species; 28. 



a) in Chile, 22. 



b) in the Magellan, region, but not of subantarctic character. 3. 

 d) endemic species of non-endemic genera, 3. 



2. Element consisting of wide-spread species, also inhabiting Chile, 2. 



3. Neotropical element, not represented in Chile, 7. 



a) non-endemic species, i. 



b) endemic species of non-endemic genera, 6. 



4. Magellanian-Old Antarctic element, 9. 



a) non-endemic Magellanian species, 2. 



b) ,, ,, Old Antarctic but not Magellanian species, 4. 



c) endemic species allied to subantarctic species, 2. , 



d) ,, ,, not allied to subantarctic species, i. 



5. Pacific element, 5. 



a) isolated endemic species of wide genera, i. 



b) endemic species belonging to genera or sections of west to central Pacific distribu- 

 tion, 3. 



d) species of endemic genus with unknown relations, i. 



A modified arrangement is attempted below, corresponding to the analysis 

 of the angiosperms. 



I. Andine-Chilean element. — 34 (64.1 %). 



a. Endemic species (5, 9.4%): Hymenophyllum rugosum, Polystichum berteri- 

 anum, Blechnum cycadifolium, Pellaea chilensis, Polypodium intermedium. 



d. Known from continental Chile, many also in other parts of S. America 

 or of still wider distribution (29, 54.7%): Trichomanes exsectum, Hymenoglossum 

 cruentum, Hymenophyllum cuneatum, caudiculatum, fuciforme, pectinatum, ferru- 

 gineum, secundum, plicatum and tortuosum, Lophosoria quadripinnata, Cystopteris 

 fragilis, Polystichum vestitum, Asplenium obliquum, Blechnum auriculatum, valdi- 

 viense and chilense, Hypolepis rugosula, Adiantum chilense, Pteris chilensis and 

 semiadnata, Histiopteris incisa, Polypodium magellanicum, Masafuerae and lanceo- 

 latum, Gleichenia quadripartita, pedalis and cf. litoralis, Lycopodium scariosum. 



II. Subantarctic-Magellanian element. — 4 (75%). 

 Not endemic, extending north but not beyond Centr. Chile: Serpyllopsis caes- 

 pitosa, Hymenophyllum falklandicum, Asplenium dareoides, Lycopodium magel- 

 lanicum. 



III. Neotropical element. — 9 (17 %). 



a. Endemic species (7, 13.1 %): Trichomanes philippianum and Ingae, Dryo- 

 pteris inaequalifolia, Asplenium macrosorum and stellatum, Blechnum longicauda, 

 Ophioglossum fernandezianum. 



b. Not endemic (2, 3.8 %): Polypodium trichomanoides, Elaphoglossum Lindenii. 



IV. West Pacific element. — 5 (94%). 



Affinities in Australia, New Zealand and Oceania, not in America. All en- 

 demic: Dicksonia berteroana and externa, Arthropteris altescandens, Blechnum 

 Schottii, Pteris berteroana. 



15 "" 557857 The Nat. Hist, of Juan Fernandez and Easter Isl. Vol. I 



