AND DjEMONOROPS, WITH DIAGNOSES OF THE NEW ONES. 203 
3-4-costulata, lateralia angustioria et longiora, anguste oblanceolata, 
supra acute 3-costata, utrinque viridia, nitida et nudaj spadix 
breviusculus (60 cent.) apice breviter caudatus ; spathae primariae 
tubulosae^ apici exsuccae et laceraein dorso aculeatae, inflorescentiae 
partiales patentes, majora 20 cent, longa, spicis utrinque numerosis 
alternatini distice horizontalibus vermicularibus ; spathis secundariis 
elongatis tubuloso-infundibuliformibus tuberculato-scabridis; spathellis 
brevissimis scaberrimis; fructibus parvis, sphaericis (immaturis 7 mill, 
diam.) 
Borneo; Sarawak (Lobb in Herb. Kew). 
40. Calamus scabridulus Becc. sp. n. — Frondium rachis supra 
acutissima bifacialis, subtus aculeis validis reduncis solitariis apice 
nigris armata ; segmenta numerosa subaequidistantia remotiuscula, 
anguste lanceolato-ensiformia acuminata, basi attenuata utrinque 
viridia et subnitentia, supra in costulis 3 acutis spinosula, subtus 
secus nervos primaries 3 tenues parce spinulosa, marginibus fere 
nudis, majora 40-45 cent, longa, 2-2*5 cent, lata, 2 apicalia paulo 
latiora sed breviora et basi breviter connata ; spadicTs infl. partiales 
valde elongatae; spathis secundariis scabrido-aculeatis ; spicis reflexis, 
spathellis brevissimis tuberculoso-hispidulis. — C, ruvido affinis. 
Billiton (Riedel) and probably also in Borneo (Motley in Herb. 
Kew). 
41. Calamus muricatus Becc Borneo. 
42. Calamus zonatus Becc, . . • • Borneo. 
C, —As in B., hut leaflets numerous^ equidistant ; spathes, 
spathels and spathellules conspicuously scabrid. 
43. Calamus radulosus Becc. . . Malayan Peninsula. 
44. Calamus rugosus Becc. . . Malayan Peninsula. 
D. -— Leaflets' many^ narrow^ often fascicled; spathes, spathels 
and spathellules smooth or more or less aculeate but never scabrid> 
Fruiting calyx explanate, 
45. Calamus viminalis Willd. (type)-— C. buroensis (partly) 
Mart, — C. litoralis Bl. — Palmajuncus viminalis Rumph. 
—Java. 
C. viminalis v» FASCiCULATUS Becc.— C. fasciculatus 
Roxb. — C. extensus (not of Roxb.) Mart,— C. pseudo^ 
Rotang Mart, 
—Bengal ;*Burma; Tenasserim ; Pinang; Andaman Islands. 
46. Calamus siamensis Becc. sp. n. — Caudex scandens digiti 
crassitiae, vaginis spinis longiusculis solitariis vel confluentibus 
