278 PROCEEDINGS OF THE AMERICAN ACADEMY 



10. Macrojiitrium nreuLARUM (sp. nov.) : dioicum, compacts 

 ca3spitans ; ramis brevissimis densifoliis ; foliis ligulatis acutis erecto- 

 incurvis apice involutis, cellulis inferne lineari-oblongis subpellucidis 

 supei'ne rotundatis minutis carnosulis papillosis, costa cum apice de- 

 sinente ; capsula ovali microstoma brevipedicellata ; operculo recte 

 rostrato ; calyptra mitriformi pilosissima. 



On trees, Loo Choo Islands, Ousima ; also Simoda, &c., Japan. 



11. Macromitridm gymnostomum (sp. nov.) : dioicum, tenellum, 

 dense deplanato-coespitans ; ramis brevissimis incrassatis ; foliis ligulatis 

 acuminatis strictis erecto-patentibus inferne oblongo- superne minute 

 rotundato-areolatis papillosis, costa sub apice evanida ; capsula oblongo- 

 ovali striata gymnostoma ; operculo e basi depressa oblique aciculari- 

 rostrato ; calyptra cuculliformi plicata epilosa. 



On rocks and trees, Simoda, Japan ; and Ousima, one of the north- 

 ern Loo Choo Islands. 



12. PoGONATUM Japonicum (sp. nov.) : elatum ; caule simpHci sub 

 perichastio innovante inferne aphyllo ; foliis confertis siccitate circinato- 

 tortilibus humidis patentissimis lineari-lanceolatis spinuloso-serratis 

 brevius lamellosis ; capsula cylindracea erecta subcurvula papillosa 

 brevipedicellata. 



Mountains northeast of Hakodadi, Japan. 



13. Bryuji HUMIDULU3I (sp. nov.) : dioicum, innovationibus gracili- 

 bus ramosum ; foliis oblongo-lanceolatis sensim attenuatis costa exce- 

 dente aristatis lineari-rhomboideo-areolatis superne denticulatis margine 

 revolutis ; capsula pendula elongata cylindraceo-clavata curvula late 

 annulata ; operculo magno hemisphjerico papillato ; peristomio nor- 

 mali. 



Moist places among mountains, near Simon's Town, Cape of Good 

 Hope. 



14. Brtum crudoides (sp. nov.) : dioicum ; caule simplici ; foliis 

 ascendendo majoribus, inferioribus lanceolatis, comalibus erecto-patenti- 

 bus lineari-lanceolatis acuminatis apice denticulatis areolatione lineari, 

 costa valida evanida ; capsula suberecta oblongo-elliptica brevicoUa 

 microstoma ; peristomio B. polymorphi : flore masc. capituliformi. 



Behring's Straits. 



15. Bryum Wrightii (sp. nov.) : monoicum vel synoicum, dense 

 csespitans, pusillum ; caulibus ramisque perbrevibus ; foliis gemmaceo- 



