158 MR. W. MITTEN ON THE MUSCI AND HEPATICJE 
S. HoMALOPHYLLUS, sp. nov. Monoicus, exspitosus, caule vage sub- 
pinnato, foliis plano-compressis ovali-oblongis acutis obtusisve ener- 
viis margine uno latere inflexo superne serrulatis, cellulis elongatis 
levibus alaribus utrinque tribus majoribus, perichztialibus ovato- 
lanceolatis serrulatis patulis, theca in pedunculo elongato-ovali collo 
curvato inclinata horizontalive, operculo conico acuminato, peristomio 
interno processibus solidis, ciliis singulis brevioribus interpositis in 
membrana ad 4 dentium longitudinis exserta. 
Hab. Niger, on roots in a rivulet, Barter. 
Larger than S. planus, (Hypnum) Brid.; foliage more compressed, leaves 
with cells destitute of the papilla so evident in that species. 
(Plagiothecium, B. et S.) 
S. NITIDIFOLIUS, sp. nov.  Monoicus, ramis ascendentibus ramosis, 
foliis patentibus compressis ovato-lanceolatis plerumque asymmetricis 
acutis integerrimis, nervis binis brevibus, angulis decurrentibus, cellulis 
angustis elongatis latitudine circiter 4g longitudine 435 uncii 
metientibus basi paucissimis laxioribus, perichzetialibus erectis confor- 
mibus, theca in pedunculo gracili brevi ovali inclinata, operculo conico 
acuto, peristomio interno processibus ciliis binis brevibus interpositis, 
in membrana fere ad dentium dimidium producta. 
Hab. Clarence Peak, Fernando Po, alt. 8000 feet, on trees, Mann. 
Pale green, shining, in habit and size resembling S. denticulatus, Dill., 
but with leaves more evenly tapering into the more acute point, not acu- 
minate, and cells half as wide, and nearly twice as long as in that species. 
(Hylocomium, Schimp.) 
S. FRUTICELLUS, sp. nov. Monoicus, intricatus, caule erecto inferne 
simplici superne in frondem bipinnatim ramoso apice descendente radi- 
cante prolifero, foliis caulinis remotiusculis patulis hastato-acuminatis 
substriatis, rameis patentibus hastato-ovatis argutius serrulatis, dorso 
parce denticulatis, enerviis, cellulis elongatis angustis alaribus nullis, 
perichetialibus patentibus e basi late ovata subito longe subulatis 
integerrimis, theca in pedunculo longissimo apice curvato ovali æquali 
horizontali pendula, operculo brevirostrato, peristomio interno pro- 
cessibus solidis ciliis tribus dimidio brevioribus in membrana ad 5 
dentium longitudinis exserta. 
Hab. Fernando Po, alt. 3000-8000 feet, Mann. 
Habit and size that of S. reptans, Sw., but distinct in the more lanceo- 
late point of the cauline and wider branch-leaves. 
S. FRONDOSUS, sp. nov. Monoicus, intricate czespitosus, caule superne 
bipinnato ramulis decurvis, foliis caulinis subsecundis latissime cor- 
dato-ovatis apiculo brevi curvato concavis margine hie illie plano 
minute serrulato, nervis binis teneris brevibus, cellulis elongatis an- 
gustis apicibus dorso prominentibus, rameis imbricatis late ovatis 
acuminatis concavis marginibus planis argute serrulatis, nervis longiori- 
