126 DR. LINDLEY ON WEST AFRICAN TROPICAL ORCHIDS. 
The whole inflorescence seems to be purple, and is not unlike 
that of Pholidota imbricata. The lip is unusually small in this 
section of the genus. 
5. B. TENUICAULE; rhizomate filiformi reptante, pseudobulbis distantibus 
tenuibus diphyllis, foliis linearibus emarginatis, scapo filiformi pluri- 
vaginato, spiea laxa bracteis glumaceis obtusis haud imbricatis, sepalis 
petalisque acutis zequalibus, his linearibus acuminatis, labello oblongo 
concavo obtuso, columna biseta. 
* Epiphyte. Fernando Po, at 5000 feet, Dec. 1860.” (648) Mann. 
Much like a small specimen of the next, but differing in the 
characters assigned to it. 
6. B. GRAvIDUM ; pseudobulbis ovatis angulatis diphyllis, foliis lineari- 
bus acutiusculis, scapo multivaginato longiore, spica oblonga imbri- . 
cata, bracteis oblongis cymbiformibus, sepalis subzequalibus carnosis 
canaliculatis acuminatis reflexis, petalis oblongis, labello linguiformi 
obtuso, columna antice ventricosa appendicibus 2 antice repandis. 
* Epiphyte. Fernando Po, at 3000 feet, Dec. 1860." (650) Mann. 
Resembles B. cochleatum, but its spike stands high above the 
leaves, and the petals and column are quite different; the lip too 
is larger in proportion. 
7. B. LupuLINUM; pseudobulbis ancipitibus oblongis diphyllis, foliis 
oblongis obtusis basi angustatis, scapo laxe vaginato pseudobulbo bre- 
viore, spica oblonga multiflora bracteis maximis distichis cymbiformi- 
bus dense imbricatis nigro furfuraceis, floribus intra bracteas abscon- 
ditis parce scabridis, sepalis ovatis carnosis, petalis nanis filiformibus, 
labello oblongo carnoso margine tenui serrato apice calloso obtuso re- 
fracto, columna mutica, anthera apice producta incrassata, polliniis 2 
connatis. 
* Epiphyte. Flowers dark purple. Ambas Bay, Febr. 1861." (783) 
Mann. 
In general appearance much like Du Petit Thouars' figure of 
Bolbophyllum occultum, a plant of which I have seen no specimen. 
They are, however, entirely different in the minute parts of fruc- 
tification: B. occultum having the feathery lip of a Ptiloglot and 
the two set: usual in Bolbophyllum, while in the species now de- 
scribed the lip is a solid fleshy plate, and the column has no setæ ; 
moreover it has a reflexed white glandular point to the purple 
lip, an anther with a great fleshy apex, and a pair of oblong con- 
nate pollen-masses, all characters at variance with B. occultum. 
It is still more like B. tetragonum in structure, though wholly 
different in habit. 
