EXOTIC LICHENS FROM EASTERN ASIA. 53 
subcerulescenti-nigricantibus et acido nitrico rosello-violas- 
centibus). Thallus albidus tenuis conferte rimulosus (K fla- 
vescens); apothecia fusconigra innata (latit. 0:5 millim.), 
margine thallino tenui vel obsoleto cincta; spore oblongo- 
ellipsoidez, longit. 0:010-0'011 millim., crassit. 0:005-0:006 
millim.; paraphyses graciles, clava fuscescente (acido nitrico 
non aliter colorata). Spermatia longit. circiter 0:025 millim., 
crassit. 00005 millim. 
On rocks, just above high-water mark. Pulo Undam, Malacea. 
25. LECANORA ACHROA, var. PHÆACHROA, Nyl. “Apotheciis sub- 
fuscis." On old posts, Malacca. 
26. LECANORA PREGRANIFERA, Nyl., sp. n. Thallus albidus 
granulatus ; apothecia nigra (latit. 0:5-0:8 millim.), intus con- 
coloria, margine thallino tenui integro cincta (demum evanes- 
cente); spore 8næ ellipsoider, longit. 0:015-0'016 millim., 
crassit. 0'009-0°010 millim. ; paraphyses gracilescentes, epithe- 
cium et hypothecium fusca. Iodo gelatina hymenialis cæru- 
lescens, thecz presertim tinctw.—Species e stirpe Lecanore 
granifere, Ach., thallo firmo granulato distincta. Thallus intus 
flavescens (K magis flavens). 
On rugged bark. St. John’s Hill, Malacca. 
27. LECANORA PUNICEA, Ach. Ontrees. Singapore. 
Tribe THELOTREMEI. 
28. THELOTREMA CAYATUM, Ach. On the trunks of dead trees. 
Singapore. 
29. THELOTREMA sUBCONFORME, Nyl., sp. n. Thallus macula 
albido-pallida rugulosa subnitidiuscula indicatus ; apothecia 
incoloria innata, extus ostiolis minutis (latit. circiter O'1 
millim.) agminose confertis indicata; spore 8næ inclores ob- 
longe 6-loculares, loculis mediis vulgo semel divisis (inde trans- 
versim bilocularibus), longit. 0:017—0:020 millim., crassit. 0007 
millim. (iodo cerulescentes).—Species locum habens prope 
T. conforme, Fée, quod sporis gaudet majoribus. 
On Lanjoot-trees. St. John's Hill, Malacca. 
30. ASCIDIUM monopactriuM, Nyl. Enum. génér. p. 119. “Spore 
singule in thecis, longs 0'140-0:160 millim., crasse 0:027— 
0:035 millim. In specimine viso e Labuan spore longiores et 
usque longit. 0:230-0:240 millim., crassit. 0:022-0*030 millim. 
Extus comparandum cum Ascidio domingense, sed longe dif- 
