274 PROCEEDINGS OF THE AMERICAN ACADEMY 



11. F. MiNUTULUS, Sulliv. in 3Iem. Ajner. Acad. n. ser. 3, p. 58, t. 2 ; 

 Icones Muse. ined. t. 24. — On calcareous banks in thickets. 



12. F. MINUTULUS, var. foliis latioribus, capsula inclinata. — Same 

 locality. 



13. F. siMiLiRETis (sp. nov.) : dioicus exiguus simplex ; caule rl- 

 gido inferne nudo ; foliis 20 - 30-jugis confertissimis subbomomallis 

 linearibus acutis minute subopace guttulato-areolatis toto ambitu im- 

 marginatis minutissime crenulato-serrulatis, duplicatura f producta, 

 lamina dorsali angusta ad basin vel supra desinente, costa valida pellu- 

 cida flexuosa sub apice dissoluta ; capsula terminali brevius pedicellata 

 oblongo-obovata ; operculo et calyptra desideratis. — On cliffs among 

 mountains. — A larger species than the last : fronds 4-5 lines high and 

 about one line wide, pale olive-green above and reddish-brown below : 

 leaves not crisped when dry. 



14. F. DissiTiFOLius (sp. iiov.) : dioicus simplex erectus mollis re- 

 moti-folius ; foliis elongato-oblongis lineari-oblongisve breviter acutis 

 fere ad apicem subdenticulatam anguste marginatis, lamina dorsali lata 

 ad basin sensim vel abruptc desinente, e cellulis laxis amplis hexagono- 

 rotundatis (illis duplicaturae basilaribus oblongis amplioribus) areolatis, 

 costa infra apicem evanescente ; capsula terminali ovali-oblonga ; oper- 

 culo longirostrato ; calyptra dimidiata. — Wet rocks in shaded ravines. 

 — Somewhat larger than the last species, with distant, dark green, and 

 when dry crisped leaves. 



15. F. DENSiUETis (sp. nov.) : dioicus parvus gracilis simplex rigi- 

 dus ; foliis 20 -25-jugis confertis subsecundis linearibus sensim acutatis 

 minutissime crenulato-serrulatis opacis ad apicem usque pellucido-cos- 

 tatis, lamina duplicaturjc ^ producta limboque pellucido intromarginali 

 instructa, lamina dorsali apicalique immarginatis ; capsula terminali 

 brevius pedicellata obovato-oblonga ; operculo longirostrato ; calyptra 

 dimidiata. — On the bottom of dried-up rivulets. — Fronds slender, 5-8 

 lines high, gradually increasing in width from the base upwards, but 

 nowhere more than about half a line wide : leaves dark green, opaque, 

 with very minute cells, remarkable for the band composed of three 

 rows of pellucid, linear cells, just within the margin of the duplicature. 



16. F. CUSPID ULATUS (sp. nov.) : dioicus pusillus simplex gracilis ; 

 foliis 16- 20-jugis elongato-oblongis obtusiusculis costa pellucida exce- 

 dente cuspidulatis opacis crenulato-serrulatis minutissime guttulato-are- 

 olatis, lamina duplicaturae §-f products) hyalino-marginata, lamina 

 apicali et dorsali ad basin late rotundata immarginatis ; capsula termi- 



