Die auf der Expedition der Gazelle von Dr. Naumann gesammelten Flechten, 51 
sed lirellae graciliores, minus turgide thallino-tectae, sporae in ascis soli- 
lariae et crebrius parenchymaticae. —  Corticola in insula Fijiana Viti 
Levu. 
Opegrapha is. Solenotheca: symbiotica Müll. Arg. Thallus 
cinereo-flavicans, tenuiter tartareus, leviter rugulosus, demum rimulosus, 
margine linea fusco-nigra cinctus; apothecia immersa, superficiem thalli 
fere omnino attingentia, demum ?/; mm. lata, vulgo minora, orbieularia v. 
leviter anguloso-orbicularia, in areolis solitaria, non confluentia nec seriata. 
demum thallo tumente subdistincte spurie marginata; discus planus, e 
livido-nigrescente mox nigrefactus, opacus, nudus; marginis proprii late- 
rales et valde tenues, fusci, tota altitudine laminae evoluti: hypothecium 
mediocriter erassum aut tenue, fuscum, subinde fere nullum aut centro 
tantum late evolutum; lamina unius ejusdemque apothecii dupliciter fer- 
tilis, simul peripherice copiose hyphidii- (spermatii-) gera et caeterum 
centro late ascosporophora: hyphidia oblongo-ellipsoidea. mierogonidia 
4 continentia, 3!/3— Au longa; asci inter paraphyses arete connexas an- 
gusti, subeylindriei, 8-spori; sporae hyalinae, 4-loculares, 13—15 u 
longae el 3— 31, u latae, fusiformes, utrinque subacutae. — Species prae- 
sentia hyphidiorum in lamina sporophora insignita est. —  Corticola in 
insula Viti Levu. 
Opegrapha 5s. Rotula melanophthalma Müll. Arg. L. B.. 1883. 
foliicola in Nova Guinea. 
Coenogonium confervoides Nyl. in Ann. Se. nat. ser. 4 vol. I. 
p. 242, ad truncos muscosos in insula Amboina. 
Dietyonema sericeum Montgn. in Bel. Voy. aux Indes orient. 
p. 159, vulgatissimum ad truncos in silvis humidis montanis insulae Neu- 
llannover. 
Dietyonema laxum Müll. Arg. Thallus laxe caespitose indefinite ex- 
pansus, nee in laminas suborbiculares aut semiorbiculares subliberas ex- 
crescens; filamenta superficiei copiose fasciculatim conglutinata, fasciculi 
longiusculi, aeruginosi, e filamentis aeruginosis et hy phis subhyalinis for- 
mali, apice albido v. subflavescenti-acuminati et ibidem filamentis tantum 
hyalinis constituti, superne nonnihil virgatim lacero - divisi, ramuli sensim 
attenuati. Apothecia ignota. — Planta erescendi modo et thallo laxe contexto 
distincta, sed elementa constitutivi ab iis D. sericei et D. membranacei non 
differunt. Hyphae 5u latae, septatae, patenter dichotome ramosae, hya- 
linae; filamenta oscillatorialia 19 u lata. articulis duplo et ultra latioribus 
quam longis, cum filamentis byphinis involventibus cire. 204 lata aut 
paullo tenuiora. — Corticola in insula Neu-Hannover. 
Porina praestans (Nyl.) Müll. Arg. Lich. Afric. occid. n. 44, cum 
sequente foliicola in Nova Guinea. | 
Porina multiseptata Müll. Arg. Thallus tenuissimus, areillaceus. 
instratus, intrieatim cellulosus, juvenilis tamen ad instar Phwllactidii 
