FROM THE CAMEROONS MOUNTAIN AND RIVER NIGER. 163 
chetialibus parvis ovatis, theca in pedunculo rubro-fusco papilloso 
inclinata obovata, operculo subulato longi-rostrato, calyptra fimbriata. 
Hab. Clarence Peak, Fernando Po, alt. 7000 feet, with Neckera pen- 
nata, Hedw., Mann. 
Similar to D. marginata, Griff., and to D. ovalis, Tayl. Cells small and 
short. 
D. LoNGINERVIS, sp. nov. Monoica, foliis patentibus siccitate sub- 
strictis angustis lanceolatis nervo sub apice evanido carinatis, margine 
e serie superne quadruplici inferne latiore cellularum elongatarum inte- 
gerrimo, cellulis superioribus latitudine circiter ;;45 longitudine 
zooo uncim metientibus, inferioribus elongatis angustis, theca in pe- 
dunculo brevi rubro-fusco superne papilloso ovali ad medium papillosa, 
opereulo subulato rostrato, calyptra fimbriata. 
Hab. Fernando Po, with Lepidopilum deverum, Mann. 
Like D. angustifolia, Dzy. et Molk., but with the cells at the base of the 
leaf much longer ; it is a larger species than D. splachnoides. 
D. sPLAcHNOrDEs, Hook. et Tayl. 
Hab. Clarence Peak, Fernando Po, with Stereodon nitidifolius, Mann. 
Two or three stems only, which appear to correspond with the Irish 
species. 
DISTICHOPHYLLUM, Dzy. et Molk. 
D. PROCUMBENS, sp. nov. Monoicum, caule brevi procumbente, foliis 
lateralibus patentibus late spathulatis apice rotundatis, intermediis 
erecto-patentibus mediisque erectis oblongo-spathulatis, omnibus apice 
apiculo parvo terminatis, margine tenui limbatis, nervo tenui ultra 
medium evanido, cellulis superioribus rotundatis diametro circiter 
toss unciæ metientibus, inferioribus oblongis, perichztialibus parvis 
obtusis, theca in pedunculo bilineari aspero minuta globoso-ovali 
collo elongato horizontali, operculo e basi conica tenui longe subu- 
lato, calyptra basi longe fimbriata. 
Hab. Fernando Po, Mann. 
Stems about half an inch high; leaves pale yellowish green, becoming 
brown in age. Nearly allied to D. spathulatum, Dzy. et Molk. 
Mniadelphus, C. Müller, must give place to Distichophyllum, on account 
of its priority. 
CYCLODICTYON, gen. nov. 
Caulis repens, ramosus. Folia binervia, cellulis rotundis lavibus. Fruc- 
tus lateralis. Calyptra mitriformis. 
C. LrEviRENS, (Hookeria) Hook. et Tayl. Muscol. Brit. et aucto- 
rum. Pterygophyllum ex parte, Bridel. 
Hab. Clarence Peak, Fernando Po, alt. 8000 feet, on trees, Mann. 
This genus is proposed to include a small group of species, all closely 
agreeing in habit and structure with C. letevirens. They differ from the 
Hookeria founded by Smith on H. lucens, and from Lepidopilum, Schw., 
