252 THE VOYAGE OF H.M.S. CHALLENGER. 



long, bordered by regular, numerous, minute teeth. Sori one to each pinna, terminal on a 

 side segment of the lowest anterior piunule. Involucre turbinate, a line deep, the very 

 base immersed in the lamina ; valves toothed at the edge, free nearly to the base ; recep- 

 tacle exserted. 



Admiralty Islands. — Intermediate between Hymenophyllum turibridgense and 

 Hymenophyllum multifidum. 



Trichomanes motleyi, Van den Bosch. 



Trichomanes motleyi, Van den Bosch ;_ Hook, and Bak., Synopsis jFil., p. 73; Baker in Journ. Linn. 

 Soc. Lond., sv. p. 105. 



Admiralty Islands. — This species is found in Ceylon, Moulmein, the Andamans, 

 Borneo, and New Caledonia, and Mr Baker informs us that Hymenophyllum cognatum, 

 Cesati, from New Guinea, is typical Hymenophyllum motleyi, and Hymenophyllum 

 pannosvm, Cesati, from the same country, is a large variety. 



Trichomanes peltatum, Baker. 



Trichomanes peltatum, Baker in Journ. Linn. Soc. Lond., ix. p. 336, t. 8, et xv., p. 105; Hook, and 

 Bak., Synopsis FiL, p. 73; Benth., Fl. Austr., vii. p. 701. 



Admiralty Islands. — This remarkable fern was first discovered in Samoa and sub- 

 sequently in New Caledonia and Queensland. 



Trichomanes humile, Forst. 



Trichomanes humile, Forst.; Baker in Journ. Linn. Soc. Lond.,' x v. p. 105; Hook, and Bak., 



Synopsis FiL, p. 80. 

 Trichomanes erectum, Brackenr. in Bot. U.S. Expl. Exped., i. p. 250, t. 3G ; Seem., Fl. Vit., p. 343. 



Admiralty Islands. — This species ranges from New Zealand through Polynesia to 

 the Sandwich Islands and the Philippines and Java, but it is not recorded from Australia. 

 It is, however, very closely allied to the widely spread Hymenophyllum pyxidiferum. 



Trichomanes fUicula, Bory. 



Trichomanes filicula, Bory; Baker Jin Journ. Linn. Soc. Lond., xv. p. 105; Hook, and Bale, 

 Synopsis FiL, p. 81 ; Seem., FL Vit., p. 344. 



Admiralty Islands. — Very common and widely dispersed in Tropical and Subtropical 

 Asia and Africa, and extending in Polynesia eastward to. Tahiti. It is also found in New 

 Caledonia and New Guinea, though hitherto not in Australia. 



Trichomanes javanicum, Blume. 



Trichomanes javanicum, Blume; Baker in Journ. Linn. Soc. Lond., xv. p. 105; Hook, and Bak., 

 Synopsis FiL, p. 83 ; Benth., Fl. Austr., vii. p. 702. 



Admiralty Islands. — North-eastern Australia, and Samoa northwards, through the 



