| FROM THE CAMEROONS MOUNTAIN AND RIVER NIGER. 157 
Very similar to the larger states of T. arcuatum, Hedw., but with the 
nerve abrupt below the apex of the leaf, and standing out as a small 
tooth. 
STEREODON, Brid. 
(Pylaiesia, Schimp.) 
S. AnvssiNICUS, (Leptohymenium) B. et S. 
| Hab. Cameroons Mountain, alt. 7000-8000 feet, on trees, Mann. 
(Theca pendula.) 
S. MOLLICELLUS,sp.nov. Dioicus, laxe late ceespitosus, ramis procum- 
bentibus elongatis ramulis brevibus pinnatis, foliis faleatis secundis 
e basi latiore sensim angustatis lanceolatis, nervis binis fere obsoletis, 
apice parce serrulatis subintegerrimis, cellulis elongatis angustis, basi 
ad angulos paucis abbreviatis, foliis ramulinis circinatis integerrimis, 
perichzetialibus elongatis lanceolatis subulatis serrulatis, theca in pe- 
dunculo longissimo gracili apice curvato ovali pendula. 
Hab. Cameroons Mountain, alt. 4000-5000 feet, Marin. 
Rather less, but habit and appearance similar to that of S. ichnotocla- 
dus, C. Miller ; leaves of the ramuli more circinate and entire. 
S.pirFrFUSUS, sp. nov. Dioicus, late laxe czspitosus, caule elon- 
gato depresso ramis brevibus pinnato, foliis compressis subsecundis e 
basi latiore sensim lanceolatis superne serrulatis nervis subobsoletis, 
ramulinis ovato lanceolatis, cellulis elongatis basi paucis abbreviatis, 
alaribus nullis, perichetialibus e basi ovato-lanceolata subulatis serru- 
latis, theca in pedunculo elongato gracili mutante, urceolata, peristo- 
mio magno, interno processibus solidis, ciliis binis subzquilongis inter- 
positis in membrana ad 2 dentium longitudinis exserta. 
Hab. Prince's Island ; Fernando Po, Barter. 
Smaller than S. mollicellus, but with the same habit; leaves not so much 
narrowed upwards and serrulate, those of the ramuli not circinate, simply 
decurved, and also serrulate. 
S. SCATURAGINEUS, (Hypnum) Brid. 
Hab. Banks of the Nunn, and Fernando Po, Mann; Prince's Island, 
Barter. 
S. Borsonicus, (Hypnum) Bel. 
Hab. Banks of the Nunn, Mann. . 
This small but most distinct moss is found intermixed with many other 
species from these regions. 
S. PAPILLOSUS, (Hypnum) Hornsch. 
Hab. Banks of the Nunn, on charred wood, Mann. 
After comparison with original specimens from South America, no ap- 
preciable difference is observable. 
S. PLANUS, (Hypnum). 
Hab. Niger, Vogel. 
