150 ME. W. MITTEN ON THE MUSCI AND HEPATICJE 
D. PUNGENS, sp. nov. Caule elongato ramoso, foliis e basi lata erecta 
sensim angustatis lanceolatis recurvis subsecundis complicatis, nervo in 
apicem tenuem excurrente, marginibus inferne reflexis apicem versus 
serratis, cellulis basi elongatis angustis sublevibus pallidis ad mar- 
gines superioribusque omnibus minutis rotundatis subobscuris mi- 
nutissime papillosis, perichetialibus interioribus erectis convolutis pel- 
lucidioribus, theca in pedunculo breviusculo gracili pallido ovali-ob- 
longa erecta, operculo conico-acuminato, peristomio dentibus brevibus 
gracilibus. 
Hab. Cameroons Mountain, alt. 10,000 feet, on rocks, Mann. 
More slender than D. radicosus, and destitute of the rootlets amongst 
the leaves. The foliage, when dry, is nearly erect and appressed. The 
leaves are attenuated into a slender sharp point, and, excepting in two ob- 
long spaces on each side of the nerve in the erect base occupied by the 
narrow elongated cells, they are everywhere nearly obscure. 
D. rLExtFOLIUS, Hook. et Tayl. 
Hab. Cameroons Mountain, alt. 8000 feet, and on rocks inside the 
largest crater, Peak Clarence, Fernando Po, Mann. 
D. PURPUREUS, Hedw. 
Hab. Cameroons Mountain, alt. 8000 feet, Mann. 
D. CYATHICARPUS, .(Zygodon) Mont. 
Hab. Cameroons Mountain, alt. 8000 feet, Mann. 
This species was gathered in Abyssinia by Schimper. 
LEUCOBRYACEÆ, C. Müller. 
LzvcoPHANES, Brid. 
L. UNGUICULATUS, sp. nov. Late cæspitosus, caule humili ramoso, 
foliis densis patentibus subsecundisve e basi concava latiore lanceolatis 
complicatis apice obtusis, nervo in apiculum brevissimum recurvum 
excurrente dorso levi, margine tenui integerrimo, cellulis omnibus 
oblongis pellucidis. 
Hab. Prince's Island, at the base of Oil Palms, Barter. 
A little more robust than L. glaucus or L. octoblepharoides, from the 
more densely inserted leaves. The recurved point of the nerve, forming a 
small hook, is peculiar. 
TRICHOSTOMACEA, Mitten. 
ANGCTANGIUM, Hedw. 
A. SPATHULATUM, Sp. nov. Cespitosum, caule subsimplici radiculoso, 
foliis superioribus patentibus, apicalibus paululum recurvis elliptico- 
lanceolatis spathulatis, basi angustioribus nervo percurrente carinatis 
apice acutis integerrimis, cellulis parvis subobscuris basi ad nervum 
paucis oblongis pellucidioribus angulis decurrentibus, perichzetialibus 
