<® 
DR. J. MUELLER ON NEW LICHENS. 461 
stalazantem, Muell. Arg., locanda est, a quibus simul habitu, 
lirellis tenuioribus, minus apertis et sporis 4-locularibus differt. 
—Corticola, in insula mollucana Ternate. 
28. PHzoeRrapuis (§ MELANOBASIS) MEDUSULIZA, Muell. Arg. ; 
thallus olivaceo-albidus, tenuissimus, levis et nitidulus ; lirelle 
orbillas 2-4 mm. latas formantes, e centro circumcirca radiatim 
discreto-divise, rami ;2°, mm. lati, simplices et semel v. bis 
dichotome divisi, in ambitu orbillarum circ. 10-17, recti v. sub- 
flexuosi, subinnati, nigri; margines vix prominuli, tenues ; discus 
concavo-planus et nudus; perithecium lateraliter sat tenue, 
sub lamin&é multo crassius, undique fusco-nigrum ; spore 8ne, 
16-18 p» longex et 6-7 p late, cylindrico-ellipsoidex, 4-loculares. 
—A Ph. sericea, Muell. Arg., cui valde affinis est, recedit 
habitu medusulino, polyclado et ramis gracilibus, characteres 
interiores ceterum bene conveniunt. Sarcographina olivacea, 
Muell. Arg., dein etiam sat similis est, sed stromata decolorato- 
distincta in hic nova specie non adsunt.—Corticola, in ins. 
Mauritii: Prof. I. B. Balfour. 
29. Puxocrarnina (§ ELeuTHEROLOMA) LimBaTa, Muell. 
Arg.; thallus olivaceo-fuscus, maculiformi-tenuis, levigatus ; 
lirellee ex emergente semiemerse, }-2 mm. long, } mm. late, 
simplices, rect, utrinque obtuse, extus usque ad aciem strato 
thallino mox expallente obsolete crispulo obtectz ; labia made- 
facta distantia, apice nigra, integra; discus pianus, nudus et 
niger; perithecium nigrum, basi late deficiens 3 spore Sne, 
24-80 p longe et 12-15 p late, locellose, locelli in series 6 dis- 
positi, in quaque serie 8 (-2)—Habitu universali ad PA. scalp- 
turatum, Muell. Arg., accedit, sed spore parvule, nec ulli nisi 
Ph. Arechavalete, Muell. Arg., arcte affinis est et a qua recedit 
lirellis paullo majoribus, obtusis, extus limbatis. Pheographis 
mesographa s. Graphis mesographa, Nyl. in Prodr. Nov. Gran. 
p- 80, dein differt lirellis majoribus, subramosis, sporis duplo 
majoribus et magis divisis.—Corticola, ad Caput Bone Spei: 
MacOwan. 
30. PuxocRrapHina (§ ErinoMA) FLEXUOSA, Muell. Arg. ; 
thallus fulvo-argillaceus, tenuissimus, obsolete granulari-aspe- 
rulus, opacus; lirelle ex erumpente subemers®, 13-25 p mm. 
simplices et hine inde bifurcatz, longiores 
longs, 4 mm. late, 
rio are ad latera thallino-corticate ; labia 
varie arcuate et subflexuose, 
