LICHENS OF NEW SOUTH WALES. 43 
menia e toro communi enata et ab excipulo proprio laterali tenui sejuncta, para- 
physibus discretis subramosis apice non dilatatis. Sporm in ascis clavatis confertis 
incolores aciculares seepissime curvatze, infra subattenuate, 3-septate, longit. "038, 
crass. “0022. Ай cortices arborum. 
Differs from C. hypochnoides, Nyl., in the non-confluent puncta and the dark hypsoid 
hypothallus; nevertheless it may be only a variety of Nylander's plant. The number of 
septa of the spores is liable to be overstated unless the spores are examined when free 
from the ascus. С. perplexum, Nyl. |, C. conspicuum Nyl.!, C. rubrocinctum, Ehrenb. |, 
C. spherale, Ach.!, C. farinaceum, Fée!, have all of them 3-septate spores. It is well, 
therefore, to note that Fée (Essai sur les Cryptogames), in his figures of several species of 
Chiodecton, including C. spherale and С. farinaceum, shows the spores with 5-9 cells. 
The error in the case of the latter two lichens may extend to the other species figured by 
Fée, as it is found that the spores with only three septa have apparently from five to 
ten cells when viewed in the ascus, owing to the septa of the spores beneath showing 
distinetly through the thin hyaline spores in front. 
15. OPEGRAPHA MEGAGONIDIA, sp. n. (Tab. VII. fig. 17.) Thallus sordide cinereo- 
albus tenuis continuus, gonidiis magnis. Apothecia superficialia conferta lirelle- 
formia elongata (rarius rotundato-difformia v. oblonga) fuscoatra simplicia secta v. 
flexuosa, epithecio aperto plano v. subconvexo levi, marginibus non prominentibus 
medio paululum distentis utrinque subclausis ; hymenium fuscum ex excipulo proprio 
(perithecio) earbonaceo integro crasso enatum, paraphysibus adglutinatis aliqua- 
tenus obscuris apice fuscis. Sporee in ascis clavatis, oblongze v. lineari-obovate, 
3-septatie, emortuz fuscescentes, longit. "02, crass. "006 mm. Ad ligna vetusta v. 
truncos arborum vetustos. 
16. PLATYGRAPHA(?) ALBOVESTITA, sp.n. (Tab. VII. fig. 13.) Thallus БурорШоеодев 
albidus effusus tenuis, matrice fisso-squamosa. Apothecia innata plana vix prominula 
difformia varie effigurata, primitus tegmine albo vestita, demum in parte denudata 
nigrescentiaque, hymenio dilute fusco, excipulo thallodi fusco tenui v. nullo, para- 
physibus capillaribus adglutinatis apice fuscis. Spore in ascis clavatis, fusiformes 
murali-divise, singulee maxim:e (long. "00, crass. "012 mm.) vel du: (tum minores), 
loculis transversis 16-20, sepius cellulis mediis semel vel bis divisis, hyaline v. lu- 
teole. Ad cortices arborum. | 
17. ГестоЕл ($ BACIDIA) ENTODIAPHANA, sp. n. (Tab. VIII. fig. 24.) Thallus viridi- 
cinerascens tenuissimus obscure areolatus v. continuus effusus, strato corticali 
diaphano. Apothecia minuta (diam. 0-4 ad 0-7 mm.) adnata, unumquodque et uni- 
versa fusca, plana, tandem convexa, intus hyalina, excipulo proprio strato goni- 
mico tenui imposito marginata, margine integro crassiusculo in juvenibus tumidulo 
pallide fusco persistente; hymenium e strato subhymeniali tenui enatum, paraphy- 
