OF FERNS FROM WEST BORNEO. 257 
immersed veins. The sori are few in number, irregularly scattered 
over the back of the segments, with a flattened, mammillate, rigid, 
deciduous indusium, which falls away leaving a scar at the base 
of the stipe, and contains ten or a dozen sessile sporangia with a 
broad incomplete nearly vertical annulus. 
175. TRICHOMANES DIGITATUM, Sw. 
176, 177. T. FILICULA, Bory. 
179 (4*). Davarııa ($HUMATA) PINNATIFIDA, n. sp.; rhizo- 
mate gracili firmo late repente, paleis lanceolatis castaneis, stipiti- 
bus segregatis strictis stramineis, frondibus lanceolatis simpliciter 
pinnatifidis rigide coriaceis glabris, pinnis brevibus linearibus 
obtusis crenatis, soris parvis submarginalibus, indusio semiorbicu- 
lari rigidulo. 
Niah, Sarawak, Mr. Charles Hose. 
Intermediate between D. pectinata and D. pedata. Rhizome 
slender, wiry, epigwous, with a few ascending pales. Stipes 
stiffly erect, 14-33 in. long. Fronds 3-5 in. long, broadest at 
the base (14-2 in.) narrowed gradually from the base to the 
apex, eut down to a narrow wing into numerous crowded spread- 
ing primary segments, 4-1 in. broad. Veins distinct, erecto- 
patent, simple or forked. Sori terminal on the veins, 8-10 on 
each side of the central and lower pinn®. Indusium rigid, per- 
sistent, not more than 1 line broad. 
178. D. prepara, Smith. 
189 (16*). D. ($ LevcosrEGIA) NEPHRODIOIDES, n. sp. ; rhizo- 
mate late repente, paleis nigris piliformibus basi peltatis predito, 
stipitibus elongatis nudis, frondibusmagnis membranaceis oblongo- 
lanceolatis bipinnatifidis parce pilosis, pinnis lanceolatis sub- 
petiolatis, pinnulis multijugis pectinato-pinnatifidis basi conflu- 
entibus, venis in pinnulis copiose pinnatis, soris medialibus, 
indusio parvo reniformi. 
Niah, Sarawak, Mr. Charles Hose. 
Nearly allied to the Javan D. Kingii, Baker, lately figured in 
Hooker's Icones,tab.1622. Rhizome firm, epigtous, $ in. in diam.; 
pales fine, hair-like, spreading. Stipe stiffly erect, } ft. long. 
Frond 2-8 ft. long, 8-9 in. broad at the middle, green, hairy 
Mainly on the rhachides of the pinne, quite destitute of scales, 
Pinne subpetiolate, the central ones 4-5 in. long, 1-1} in. 
broad, the lower rather smaller, all except the lowest cuneate- 
