220 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA, [0. bakauensis 
Kenepai ‘respectively Nos. 2910 and 2129 Herb. Hor. Bot. Bogor.) Not differing 
from Hallier’s Nos. 2910 and 2129 are other specimens collected by Hewitt at Quop 
in Sarawak (Herb. Kew.). 
Opservations.—D, Haillierianus is apparently related to D. Sepal and especially 
to D. pseudo-sepal, and like it, has the leaf-sheaths costulate longitudinally and is 
very similarly armed with relatively large laminar spines. Probably  Hallier's 
Nos. 2910 and 2129 belong to the Jaemonorops mentioned by Ridley (Materials 
for a Flora of the Malayan Peninsula ii, 176) as a native of Borneo, under 
D. monticolus. I have described the fruit of the plant from Pulau Lemukatan, which 
must be considered as representing the type of the species. The Lemukatan plant 
differs from those of Sarawak and Liang-gagan in the leaf-sheaths armed with 
lighter (schistaceous) spines and in the leaflets larger (30-35 cm. long, 16-17 mm, 
broad) than in the specimens of the other above-mentioned localities, 
The fruit of D. Hallierianus (from Lemukatan’ is very similar to that of D. fissus 
VAR. cinnamoneus, but in this the fruit-scales are very minutely crisped on the margins, 
while they are smooth in D. Lallienianus. 
PLATE 99.—Daemonorops Hallierianus Bece. Intermediate portion of a leaf, and 
portion of the sheathed stem with a fruiting spadix (on the left side of the plate ; 
portion of the spadix with a fruit; one seed: from Hallier’s No, 374. Small, not 
yet open, female spadix and a branchelet with female flowers (in the centre of 
the plate): from Hallier’s No. 2910. Portion of a stem with a male spadix and 
the upper end of a leaf, upper surface: from Hewitts specimen in Herb. Kew, 
2lbis (87). DarmoNnoRops BAKAUENSIS Becc. sp. n. 
DzscRIPTION,—Apparently scandent, rather slender. Sheuthed stem 15 mm. in diam. 
Leaf-sheaths covered with a tobacco-coloured, furfuraceous, partially deciduous indumentum, 
more or less distinctly pluri-costulate longitudinally, armed, not very densely, with 
. scattered or subseriate, spreading, thinly laminar, elastic, unequal, 1-2 cm. long, light- 
brown spines. eaves of uppor part of the plaut apparently about 1 m. long in the 
pinniferous part; the petiole about 30 cm. long, 1 cm. broad, flat and smooth 
on the upper and convex on the under surface of its lower portion and more or 
less biconvex upwards, its margins rather sharp, and more or less irregularly armed 
with spreading straight spines; the rachis in its first and intermediate portion is 
armed along the centre of the lower surface with a single series of small claws, 
and has a smooth salient angle on the opposite surface. Leaflets moderately numerous, 
equidistant or nearly so, 4-5 cm. apart, ensiform, or very narrowly lanceolate, 
broadest about their middle, thence tapering to a rather acute base, and gradually 
acuminate towards a filamentose, sparingly  bristly-spinulous tip; their mid-costa is 
acute, and has only a few spinules near the apex; of the side nerves one on each 
side of the mid-costa is sparingly bristly-spinulous and slightly thicker than the others, 
but the blade cannot be called 3-costulate; on the lower surface, the mid-costa alone 
is closely and very minutely ciliate; the margins are very appressedly and rather 
closely spinulous; the intermediate leaflets are 35-40 cm. long, 2-2:5 cm. broad at 
