176 | REV. W. A. LEIGHTON ON THE LICHENS OF CEYLON. 
139. G. TRICOSA, Ach. 
Central Province. 
Paraphyses confertæ, indistinctæ, granulosz ; spore 8, leviter fuscescentes, iodo luteo-fuscescentes. 
Plate XXXVII. fig. 74 bis. : 
140. G. Barsnisir, Fée. 
Central Province. 
Paraphyses confertæ, graciles, distinctæ, iodo non tinctæ; sporæ 8, pallide luteæ, iodo cærulee fuscæ. 
Plate XXXVII. fig. 73. 
141. G. COLUBROSA, Nyl. 
Tropical, south of the island. 
Paraphyses confertæ, indistinctæ, granulis interspersis, iodo non tinctæ; sporæ 8, incolores, iodo cærule- 
scentes; hypothecium fuscum, laterale, basi deficiens. 
Plate XXXVI. fig. 72. 
142. G. DIMORPHODES, Nyl. MS., n. sp.: thallus galactino-albidus, glaucescens, crustaceus, 
dilatatus, lævigatus vel rimoso-areolatus, nitidus, linea tenuissima nigro-fusca limi- 
tatus; lirellæ sessiles, concolores, margine thallino turgescente omnino obtectæ, 
maxime dendriticæ vel pluries radiato-divisæ, valde elongatæ, flexuosæ, undulatæ 
atque intricate, angustatæ, apicibus obtusis, intus incolores; epithecium primo 
rimiforme clausum, dein apertum planiusculum vel concaviusculum carneo-rufum ; 
hypothecium incolor, inconspicuum, basi pallide fuscis gonidiis; spore 8, incolores, 
parvee, ovales, 4-cellulose, cellulis aliquando binucleolatis iodo cærulescentes. 
Central Province. ; 
Paraphyses distinctæ, iodo lutescentes. Ad stirpem Medusularum pertinens. 
Plate XXXVI. fig. 15. 
143. Œ. CASIO-RADIANS, Leight., n. sp.: thallus sordide pallido-lutescens, tenuis, suberu- 
staceus, opacus, subpulverulentus, effusus; lirellæ emergentes, depresso-innatæ, thallo 
lateraliter obtectæ, albo-pruinosæ, stellato-radiate atque intricate, ramis rectis aut 
subundulatis, simplicibus aut bi- vel trifurcatis, apicibus acute attenuatis; margine 
thallino subtumido albo-pulverulento, erecto, ætate obliterato ; epithecio rimiformi, 
plus minusve aperto, deinde hiascente, cæsio-pruinoso, xtate maxime dilatato, cæsio- 
suffuso, plano, marginem thallinum obliterante ; hypothecium laterale basi deficiens ; 
sporæ 8, incolores, deinde fuscæ, oblongæ, 7-8-cellulosæ, cellulis binucleolatis iodo 
cærulee fuscæ. 
Central Province. 
Ad stirpem dendritice pertinens. Paraphyses distinct, iodo non tinctæ. 
Plate XXXVI. fig. 16. 
144. G. NEMATOIDES, Leight., n. sp. : thallus fuscus, purpuraceus, tenuis, inzequalis, eva- 
nescens ; lirellæ albo-pulverulente, graciles, sessiles, longitudinaliter subparallelæ, 
lineares, apicibus attenuatæ, simplices aut subradiato-conglomeratæ, divaricato- 
