284, MR. HENRY RIDLEY ON ORCHIDEE AND 
This usually grows on the lower part of the stems of the 
Nibong Palm, Oncosperma filamentosum, Blume, creeping up and 
around the stems. It is a poor and insignificant species, easily 
distinguished by its long slender rhizome, with distant pseudo- 
bulbs and narrow leaves. 
CIRRHOPETALUM SEMIBIFIDUM, Fzdl., sp. nova. Pseudo-bulbt vix 
3 poll. longi, conici, angulati, virides, in rhizomate gracili dissiti. 
Folium 14 poll. longum, } poll. latum, lanceolatum subacutum, 
coriaceum, atroviride, non carinatum. Scapus 4 poll. longus, 
gracillimus, atrokermesinus; vagine 3-4, } poll. longe, 
acuminate, albescentes. Umbella ferme circularis, 5-flora ; 
bractez lineares, acuminate, rufe; pedicellus cum ovario 
$ poll. longus. Sepalum posticum ovatum acuminatum roseum 
obscurius striatum in margine ciliatum, lateralia 13 poll. longa, 
usque ad dimidiam partem connata, ;°; poll. in diam, obscure 
rosea, apicibus subdivaricatis loratis acuminatis acutis. Petala 
ovata lanceolata acuta, falcata, in margine ciliata. Labellwm 
lingueeforme, curvum, roseum apice pallidum. Columna 
longiuscula, flava. Anthera elongata, conica ; stelidia brevia, 
rotundata. 
Hab. Singapore: Kranji! v.v. 
This is allied to O. gamosepalum, Griff., bat has much smaller 
pseudo-bulbs 4 to # inch apart on the slender rhizome, very 
narrow lateral sepals connate for half their length and then 
separate with narrow diverging points, and the flowers are deep 
crimson. 
C. aurarum, Lindl., Bot. Reg. (1840) Misc., p. 50; (1848) 
t. 61. 
Hab. Selangor: Seppan, on trees overhanging the river; 
scarce. 
This is a charming plant closely allied to C. elegans, Teysm. 
and Binn., of Java, and much resembling it, differing in the free 
lateral sepals and the entire not denticulate stelidia. The 
figure in the Botanical Register is less deeply coloured than the 
Selangor plant. The name auratwm is peculiarly inappropriate, 
as the yellow colour is the least conspicuous in the flower. It 
has an odour like that of a mushroom. 
C. Maxoyanum, Reichb. f. in Gard. Chron. (1879) 1. p- 234 ; 
Hook. f., Bot. Mag., t. 7259. 
Hab. Singapore: Chan Chu Kang! 
