DR. Je MUELLER ON NEW LICHENS. 457 
spore in ascis angustis Sne, circ. 17 » longe et 43 p late, digiti- 
formes, regulariter 4-loculares.—Species juxta Op. chloroconiam, 
Muell. Arg. in Flora, Ixv. (1882) p. 331, inserenda est.—Corticola, 
ad Caput Bonz Spei: MacOwan. 
17. Oprgrapua (§ PLevrorHEctuM) anauxosa, Muell. Arg.; 
thallus argillaceo-albidus, tenuis, rugulosus ; lirellz 3-1} mm. 
longer, sé mm. late, simplices v. rarius divise, recte et curvate, 
primum innate et tantum linea rimali nigra conspicue, acute, 
demum alte prominentes et obtuse et impure nudate, in vertice 
secus rimam utrinque stratulo corticali sat diu persistente pal- 
lido fasciate et bicolores factz, infra fascias lateraliter mox 
nudato-nigre et longitrorsum subangulosw, apice arcte conni- 
ventes ; perithecium nigrum, basi sub lamina nullum, lateraliter 
patens, in sectione pyramidali, unde lirelle tote in sectione 
superne subacute; spore in ascis cylindrico-obovoideis 8ne, 
ascis subtriplo breviores, 28-33 pu longe, cum halone 64 p late, 
7-8-loculares.—Prope Op. tartaream, Muell. Arg., intercalanda 
est. Ex apice regulariter aut irregulariter thallino-bifurcato aut 
nudo aut hinc inde transversim plicatulo, et transversim fasciato 
valde ludit et dein subinde lirellas compositas aut peculiariter pro- 
liferas simulat.—Corticola, in tactu montis Pouce in ins. Mauritii: 
Dr. Ayres. 
18. Grapuis (§ AULACOGRAMMA) TURGIDULA, Muell. Arg.; 
thallus albidus, tenuissimus, obsolete rugulosus : lirella {-2 mm. 
long, ;3, mm. late, simplices et recte v. subrecte, sparse, nigre, 
elato-emerse, basi utrinque dimidia altitudine thallino-corticate, 
ceterum nude et aterrime; labia conniventia, turgidula, ad 
latera levissime sulcato-unistriolata; perithecium nigrum, basi 
valide completum ; spore circ. 6ne, circ. 65 » longe et 11 p late, 
12-15-loculares.—Juxta Gr. rimulosam, Muell. Arg., inserenda 
est, a qua differt lirellis alte emersis, non lamelloso-sulcatis, 
abbreviatis et magnitudine sporarum. Prima fronte quasi Gr. 
lineolam validam lirellis magis emersis simulat—Corticola, in 
summitate montis Pouce, in ins. Mauritii: Dr. Ayres. 
19. Graruis (§ AULACOGRAMMA) FLAVICANS, Muell. Arg.; 
thallus virenti-flavicans, tenuissimus, continuus, obsolete rugu- 
losus et nitidulus; lirelle copiose, 3-5 mm. longe i mm. late, 
intricatim arcuate et simul flexuose longe acuminate, utrinque 
primum undique et dein circiter pro % altitudinis thallino-corti- 
