536 MUSCI ANTARCTICI. 
4. A. mutabilis, n. sp. ; caulibus ezespitosis ramosis elongatis 
gracillimis, folis confertis laxioribusve erecto-patentibus 
rarius falcato-secundis lanceolatis v. ovato-lanceolatis con- 
caviusculis enerviis siccitate appressis, theca— ? 
var. a. microphylla ; foliis ovato-lanceolatis minutissimis. 
Has. Lord Auckland’s group, and Campbell’s Island. 
var. B. subsecunda ; foliis laxioribus inferioribus secundis su- 
perioribus ut in var. a. 
Has. Falkland Islands. 
var. y. uncinata ; folus dissitis faleato-secundis. 
Has. Falkland Islands. 3 
5. A. laxifolia, n. sp. ; caulibus laxe ceespitosis parce ramosis 
foliis lanceolato-subulatis obtusiusculis concavis enerviis 
ramulinis faleato-secundis caulinis erectis subsecundis laxe 
imbricatis, perichetialibus elongatis ovato-lanceolatis con- 
volutis, theca exserta ovato-oblonga. 
var. B. minor ; theca subexserta. 
Has. Hamit Island, Cape Horn. 
6. A. subulata, Harvey in Hook. Ic. Plant. t. 201. 
var. B. rigida; foliis minus falcatis crassioribus luridis. 
Has. Hermite Island, Cape Horn ; Falkland Islands. 
var. y. perichetialis; theca foliis paricbetialiines minoribus 
immersa. 
Has. Lord Auckland’s and Campbell's Islands. 
Subgenus Acroscuisma, Hook. fil. et Wils. 
Theca cylindrica, e basi ad medium et ultra indehiscens, 
apicem versus tantum in valvulis 4 vel 8 fissa ;—an genus - 
proprium ? 
7. A. (Acroschisma) Wilsoni, Hook. fil. 
Has. Hermite Island, Cape Horn. 
For the better illustration of this difficult genus, Mr. Wil- z 
son has furnished me with a tabular view of all the know? a 
species.—(J. D. H.) 
