178 REV. W. A. LEIGHTON ON THE LICHENS OF CEYLON. 
epithecium valde angustatum, rimiforme, fuscum; hypothecium laterale, fuscum, 
basi defieiens; sporæ 2 (una quam altera major), pallide lutescentes, oblongo-cylin- 
dricæ, 12-cellulosæ (fere septatæ), cellulis transversim 4-nucleolatis singulari vel 
duplici serie, iodo cærulescentes. 
Nuwarra Eliya, 6000 ft. alt. 
Ad stirpem Fissurinarum pertinens. Paraphyses distincte, iodo lutescentes. 
Plate XXXVI. fig. 18. 
149. G. SUBMARCESCENS, Leight., n.sp. : thallus sordide olivaceus, tenuis, levigatus, subni- 
tidus, effusus, circa lirellas repandus et ibidem furfuraceo-substriatulus; lirellæ sim- 
plices vel divaricato-ramosæ, plus minusve subradiatee, erumpentes, margine thallino 
crassiusculo furfuraceo-substriatulo circumcinctæ, marcido-fulve, margine proprio 
tenuissimo ; epithecium rimiforme, subhiaseens; hypothecium laterale, paululum 
fuscum, vix conspicuum, basi deficiens; sporæ 8, fusce, parvæ, lineari-oblongæ, 
3—4-septatæ, iodo non tincte. 
Central Province. 
Ad stirpem Fissurinarum pertinens. Paraphyses distinctæ, iodo non tinctæ, 
Plate XXX VI, fig. 19. 
150. HELMINTHOCARPON LEPREVOSTII, Fée (Suppl. t. 35. f. 11). 
Central Province. 
Paraphyses confertæ, indistinctze, minute granulosæ, iodo lutescentes; spore 8, pallide virentes, iodo cærulee 
fuscescentes ; hypothecium integrum, crassum, 
Plate XX XVI. fig. 71. 
151. OPEGRAPHA SIDERELLA, Ach. 
Central Province. 
152. PLATYGRAPHA INTERRUPTA, Fée. 
South of island (tropical). 
Paraphyses vix visibiles, iodo lutescentes, vix cærulee tinctæ, spore 8, incolores ; hypothecium crassum, 
nigro-fuscum. 
Plate XXXVI. fig. 70. 
153. P. MEGISTOCARPA, Leight., n. sp. : thallus pallide fulvescens, tenuis, levigatus, sub- - 
nitidus; apothecia sessilia, nigra, rotundata vel oblonga vel elongato-oblonga, subree- 
tiuscula, plana vel subconvexiuscula, maxima, subpruinosa ; margine thallino tenui, 
mediocri, erecto, albido, integro vel flexuoso-crenulato ; sporz 8, incolores, dein fu- 
scescentes, oblongo-fusiformes, 6-8-cellulosæ ; paraphyses conferte, tamen distincte, 
moniliformes; hypothecium crassum, nigrum; gelatina hymenea iodo vinose fulve- 
scens aut lutescens. 
Ceylon. 
Plate XXXVI. fig. 20. 
