SOME CRYPTOGAMS FROM CHRISTMAS ISLAND 341 
18. Bostrychia tenella J. Ag. Sp. ae: ii. p. 8 (1863). 
Blow Hole beyond Waterfall, no. 238. 
Geogr. Distr. Indian Ocean. Warm Atlantic. §. Pacific. 
19. Ceramium clavulatum Ag. in Kunth Syn. Pl. Aiquin. i. p. 2 
1822). 
( Near a no. 236. 
Geogr. Distr. All warm oceans. 
ice Sommeey! polyclada, n. sp. .Frons gelatinoso-mem- 
branacea, eee em. alta, e callo basali subito late expansa, 
2°5 em. lata, tiaaic ramosa; rami breves lati (0-6-0-7 em.), 
ramuli supra axillas rotundatas conniventes, sensim 
oe segmentis ‘icuitiealibiie brevissimis divarica 
Christmas Island. Flying Fish Cove, Oct. 1904, coll. 
H. N. Ride y, no. 231 
he inner structure of the thallus consists of sparse, interlaced, 
fine Alisnante, embedded in gelatine; the cortical cells are minute,.- 
in a series of 8-4 rows, perpendiculay to the surface. From its 
nearest ally, H. formosa, it differs in having a dichotomous, not a 
pinnate, pen EF ation; a muc denaér 1 habit ; quite entire margins ; 
dulla mo 
pe 
1. Corallina sp. 
Wate no. Bil, Broken fragments only. 
- Jania micrarthrodia Lamour. Polyp. Flex. p. 271 (1816). 
Near Wa terfall, Oct. 1904, no. 235. 
Geogr. Distr. ‘Australia. New Zealand. 
Mosc. 
1. Lissidens Holitanus Doz. & Molk. Bry. Jay. i. p. 4, tab. 4 (1855). 
Plateau, no. 215. 
ak Distr. Java. 
vanes ae" chlorophy hein’ Muell. Synops. ii. p. 585 (1851). 
Piston o. 214. 
Geogr. Dae Java, Celebes. Timor. Ceylon 
8. Leucophanes glaucescens C. Muell. ex Fleiseh. Musci Flor. 
eSeitcoxore, | i, p. 178 (1904). 
Plateau, no. 214 ex parte; Irvine Hall, no. 202 ex parte. 
rig Distr. Java. Sumatra. Andaman Islands. 
Ww small plants of this were found nestling in tufts of larger 
aes 
4, Homi apiculata Fleisch. Musci Flor. Buitenzorg, i 1. p. 825 
1904 
det Fish Cove, no. 204 pro parte. 
Geogr. Distr, _Ja ava. 
1+ tnft of Bet thi 
f 
