328 



northerly range recorded for the AustraHan type Microtis, R. Br., is the island of 

 Nippon, in latitude 36° N. 



Turning now to the South Pacific Ocean, it at once becomes apparent that 

 our material is much less extensive than that which we have been discussing, for 

 a vast amount of work still remains to be accomplished in these regions. Prac- 

 tically the only islands from which we have fairly reliable (though often scanty) 

 data, are: — New Caledonia (including the Loyalty Islands), New Hebrides, Fiji, 

 Samoa, Society Islands (including Tahiti), the Solomons, the Carolines (includ- 

 ing the Pelew Islands), the Marianne or Ladrone Islands, Bonin Island, and, 

 of course. New Zealand, where excellent handbooks have been published. 



In what follows, I have excluded the Bismarck Archipelago and that of 

 D'Entrecasteaux, as forming part of New Guinea. 



It appears from an investigation of our records, that less than a third of 

 our exotic genera are unrepresented in this portion of the globe, though some of 

 these may yet be reported. These genera comprise Osyricera, Bl. ; Pholidota, 

 Lindl. ; Pacliystoma/Bl.; Epipogiim, Gmel.; Phalaenopsis, hmdl.; Cleisostoma, 

 Bl. ; Ornithochilus, Wall. ; Corymbis (Corymb orchis), Thou. ; Cheirostylis, Bl. ; 

 and Apostasia, Bl. The remaining genera are all represented by species which 

 are almost exclusively endemic. 



Four well-known genera are up to the present monotypic, viz., Cymbidium, 

 Sw. ; Eiilophia, R. Br. ; Galeola, Thou. ; and Vanda, Jones. On the other hand, 

 Dendrobium with upwards of 60 species, Bulhophyllum with about 23, Phreatia 

 about 18, and Calanthe with 23, are well developed. 



In one instance two islands a considerable distance apart, Samoa and Fiji, 

 share a species of Oberonia in common. In another case, a species described by 

 Reichb. f. as from the "Pacific Isles," is represented by a variety ^^^ in Thursday 

 Island, a possession of Queensland. Two other well-known Australian species, 

 Dendrobium hispiditm, A. Rich., and Calanthe veratrifolia, R. Br., have been 

 reported from Samoa and New Caledonia respectively. In addition to these, the 

 widely distributed species Phajus grandifolius, Lour. ; Geodorum pictitm, Lindl. ; 

 Liiisia teretifolia, Gaud.; and Spiranthes australis, Lindl. (=>S. sinensis, Ames), 

 also occur in Australia. 



This last species, together with Gastrodia sesamoides, R. Br., and Cory- 

 santhes bicalcarata, R. Br.,*^^^^ we also share with New Zealand. 



Our exotic genera appear to be distributed among the above islands as 

 follows : — 



1. New Caledonia . . . . 21 genera and 101 species 



2. Loyalty 



3. New Hebrides 



4. Fiji 



5. Samoa . . 



6. Society 



7. Tahiti . . 



8. Solomons 



9. Carolines 



10. Pelew Islands . . 



11. Marianne 

 Bonin Island . . 

 New Zealand . . 



12 

 13 

 14. Pacific Islands (unspec 



fied) . . 



2 



2 



4 



11 



13 



33 



18 



54 



10 



16 



10 



16 



5 



11 



3 



3 



2 



2 



3 



3 



1 



2 



6 



17 



10 



18 



(9) Dendrobium Goiddii, Richb. f ., var. acutum, Richb. f. 



(10) This species is conspecific with C. Cheesemaimii, Hook, f., in the Dominion. 



