162 REV. W. A. LEIGHTON ON THE LICHENS OF CEYLON. 
In the accompanying plates the spores have been all magnified alike, 600 linear. 
1. PTERYGIUM ZEYLANENSE, Leight., n. sp. : thallus luridus seu pallido-castaneus, opacus, 
radiatus, centrifugus, laciniis angustis dichotomo-multifidis, adpressis, convexis, 
erosse longitudinaliter rugulosis, confertis, imbricatis, subtus pallidior, longitudi- 
naliter rugulosus, versus centrum rhizinis densis fusco-nigris conglomeratis; apo- 
thecia terminalia, subpedicellata, lecanorina, extus rugosa, disco subconcaviusculo 
pallide rufo, margine subincurvo minute granulato, tandem lacerato-difformi; para- 
physes graciles, distincte ; sporæ 8, ellipticæ, incolores ; hypothecium pallide fuscum. 
Ad saxa super ripas rivulorum, Ambagamowa, Ceylon. 
Duplo major quam P. centrifugum, Nyl. (Anzi, Lich. Langob. 311 !), atque thallo mem- 
branaceo fragili non cartilagineo et firmo. Facie externa Physcie cujusdam, at interna 
satis diversa. Cellulas paralleles longitudinales paucas exhibet, granulis gonimis unifor- 
miter diffusis pluribus moniliformi-concretis. Gelatina hymenea iodo violacee tincta. 
Plate XXXVI. fig. 1, sporze magn. 600. 
2. LEPTOGIUM TREMELLOIDES, Fr. 
Central Province. 
3. L. CALLITHAMNION, Nyl. Syn. i. 126. 
On trunks of palms, Peradeniya. 
4. L. CYANESCENS, Nyl. 
Central Province. 
5. L. SATURNINUM, Nyl. 
Habgalla, 6000 ft. alt. 
6. L. PHYLLOCARPUM (Pers.), var. macrocarpum, N yl.,— Lindig, Lich. N. Gran. 87! & 126! 
Central Province, 5000 ft. alt. 
1. COLLEMA NIGRESCENS, Ach. 
Central Province. 
8. SPHINCTRINA MICROCEPHALA, Nyl. 
Peradeniya; rare. 
9. TRACHYLIA LEUCAMPYX, Tuck.,— Wright's Lich. Cube, 21! 
Peradeniya. 
10. SPHAROPHORON AUSTRALE, Laur. 
Central Province, 6000—8000 ft. alt. 
11. BÆOMYCES RUFUS, Ach. 
Neuvara Eliza, 7000 AM 
