52 DR. W. NYLANDER AND THE REV. J. M. CROMBIE ON 
thecia et spermogonia ignota. Parmelia minor, thallo K+ 
(medulla tum flavente).—A ffinis videtur P. sublimbate, Nyl. 
On mossy trunks. Government Hill, Penang. 
18. PARMELIA MALACCENSIS, Myl.,sp.n. "Thallus subochroleucus 
orbiculari-expansus, adpressus lineari-laciniatus, laciniis multi- 
fidis contiguis vel subimbricato-contiguis (latit. circiter 1 
millim.), supra subconvexulis papillisque isidiosis plus minusve 
conspersis, subtus fuscis, rhizinis parvulis tenuibus (at vix 
ullis marginalibus); apothecia badio-fusea (latit. circiter 1 
millim.), margine thallino crassulo subintegro cincta; spore 
Snæ ellipsoidez, longit. circiter 0:007 millim., crassit. circiter 
0:0035 millim. Iodo thece sole cwrulescentes. Thallus K 
non reagens vel medulla leviter lutescens.—E stirpe est Par- 
melie relicine : affinis videtur P. intertexte, Mont. (Javanice), 
sed ejus thallus habet isidium, marginem receptacularem alium. 
On Cashew-nut trees, St. John's Hill, Malacca: sparingly fertile. 
Also at Allagajah, near Malacca: sterile. 
Tribe PHyYscret. 
19. Puvscra PrcTA (Sw.). On trees. Singapore.—F. foliicola, 
Cromb. Thallus smaller, thinner, closely adnate, sorediiferous in 
the centre. On leaves of Garcinia mangostana. Malacca: sterile. 
Tribe Pyxtvet. 
20. PyxiwE cocoEs (Ach.). On bark of trees. Bukit Serindeh, 
Malacca. 
21. PYXINE sonEDIATA (Fr.). On trees in maritime situations. 
Pulo Undam, near Malacca. 
Tribe LECANORETI. 
22. PANNARIA PANNOSA (Sw.). On the trunks of trees and on 
mosses. Water Islands (Pulo Undam), near Malacca; Penang. 
23. LECANORA LEPTOZONA, Nyl., sp. n. Thallus albidus tenuis 
rimulosus ; apothecia rufa superficialia biatorina plana (latit. 
0:5 millim.) ; margine (perithecio) tenui infuscato; spore pla- 
eodinz, loculis sat retractis, longit. 0009-0011 millim., crassit. 
0:003 millim.; paraphyses non bene discrete, epithecium lutes- 
cens (K purpurascens).—Accedens versus Lecanoram c@sio- 
rufam, Ach., Nyl., notis autem allatis dignota. 
On shady rocks. Pulo Undam, near Malacca. 
24. LECANORA GANGALIZODES, Nyl., sp. n. Similis fere Leca- 
nore gangalize, Nyl. in Flora, 1874, p. 8, sed apothecia nigri- 
canti-fuscescentia, paraphysum clavis fuscis (in Z. gangaliza 
