OF ARTS AND SCIENCES. 277 



4. ORTnoTRiCHUM Japonicum (sp. nov.) : monoicura, laxe pulvi- 

 natum ; foliis e basi elongato-lanceolata linearibus ; capsula exserta 

 obovata longicolla 8-sti"iata ; peristomii duplicis dentibus bigeminatis, 

 ciliis nodoso-articulatis carinatis ; calyptra campanulata multoties plicata 

 epilosa. 



On trees in shaded ravines, Hakodadi, Japan. * 



5. DiCRANELLA OBSCURA (sp. nov.) : dioica, dense caespitosa, sub- 

 simplex ; foliis e basi lanceolata longissime subulatis subsecundis apice 

 dentatis, costa percurrente ; capsula ovali-cylindracea microstoma 

 pachydermi ; operculo aciculari-rostrato erecto ; annulo obscuro ; 

 calyptra magna ; sporis majusculis. 



On steep banks near Hong Kong, China. 



6. Pttchomitrium Wilsoni (sp. nov.) : monoicum, caespitosum ; 

 caulibus robustis ; foliis confertis lineari-lanceolatis superne margine 

 incrassata serratis, costa sub apice evanida ; capsula elongato-ovali 

 microstoma ; operculo rectirostro ; perist. dentibus subtrifidis hie illic 

 pertusis ; calyptra permagna campanulata rostrata plicata basi lobata. 



On rocks and hill-sides, Simoda, Japan. 



7. Trichostomum tortuloides (sp. nov.) : monoicum, dense 

 ca3spitans ; caulibus brevibus congesto-foliosis ; foliis lineari-lanceolatis 

 costa excurrente cuspidatis, marginibus incurvis subundulatis integer- 

 rimis ; capsula cylindracea curvula ; perist. dentibus modice contortis 

 inferne nodoso-articulatis ; operculo longe rostrato ; calyptra longa an- 

 gusta contorta. 



On rocks among hills, near Simon's Town, Cape of Good Hope. 



8. Mnium flagellare (sp. nov.) : dioicum ; caulibus simplicibus, 

 innovationibus numerosis filiformibus erectis appresso-microphyllis in- 

 fra perichfet. et perigon. oriundis ; foliis caulinis ascendendo majoribus 

 laxis erecto-patentibus oblongis elliptico-oblongisve superne duplicato- 

 serratis dense minute rotundato-areolatis papillosis, costa percurrente ; 

 paraphysibus subclavatis : fructu non viso. 



Rocks, on the summit of mountains, northeast of Hakodadi, Japan. 



9. Leucobrtum Boninense (sp. nov.) : dioicum, subgracile ; fohis 

 lineari-lanceolatis strictiusculis superne convolutis apice serratis dorso 

 Isevibus, pericha^tialibus interioribus longe vaginantibus subito attenu- 

 atis ; capsula obovato-oblonga strumosa ; pedicello breviusculo : flo- 

 ribus masculis aggregatis. 



Bonin Islands. 



