286 MR. H. N. RIDLEY—AN ENUMERATION OF 
PACHYSTOMA PANTANUM, Mig. Fl. Ind. Bat. iii. p. 675; 
Pachychilus pantanus, Blume, Mus. Bot. Lugd.-Bat. ii. p. 178. 
“Padang Pantan, Borneo” (Korthals fide Blume). 
AGROSTOPHYLLUM MAJUS, Hook. f. Fl. Brit. Ind. v. p. 824. 
Sarawak (Bishop Hose). 
A. SACCATUM, sp. nov. 
Caules ultra 2 pedes alti, validi, compressi. Folia linearia, lata, 
subaeuta, 6 pollices longa, pollicem lata, vaginis lj poll. latis. 
Capitula magna, 1} poll crassa, bracteis floribus :equalibus, 
3-pollicaribus, exterioribus mox in fibrillos resolutis. Flores 
iis A. javanice squales. ^ Sepala ovata carinata cuspidata. 
Petala lanceolata angustiora et tenuiora.  Labellum sepalis equi- 
longum, hypochilo saccato, lobis lateralibus triangularibus erectis, 
partitione transversali conjunctis, epichilio ovali acuto, mammillis 
duabus carnosis paullo elevatis. ^ Columna sigmoidea, sepalo 
postico subsqualis, apice dilatato, stelidiis rotundatis. Capsula 
fusiformis rostrata, ferme }-pollicaris. 
Sarawak (Haviland). 
Allied to A. javanicum, Blume, and A. majus, Hook. f., but 
differing from both in the hypochil being completely separated 
from the epichil by a transverse wall connecting the two lateral 
lobes. There is a pair of raised lumps on the ovate epichil 
which correspond to the calli present in A. majus, Hook. f. Like 
some other species the flowers are self-fertilized, the pollen by 
growth passing into the stigma over the edge of the rostellum ; 
but apparently the fruit does not always mature. The bracts, 
especially the outer ones, have a tendency to split up into fibrils, 
giving the head a hispid appearance. 
A. KHASIYANUM, Griff. in Cale. Journ. Nat. Hist. iv. (1844) 
p. 376, t. 19 ; Eria planicaulis, Wall. ! Borneo (Teysmann in Herb. 
Bogor. !). 
Catoeyxe Cuminen, Lindl. Bot. Reg. (1840), Misc. p. 76. 
Sandakan (Pryer !). 
C. sPECIOSA, Lindl. Gen. et Sp. Orch. p. 39. Sarawak (JI. 
Everett !). 
C. PAN DURATA, Lindl. in Gard. Chron. (1853) p. 791. Pon- 
tianak! Sintang! (native collectors) ; Matang, Sarawak (Havi- 
land). 
