LICHENES — DR JEAN MULLEK 361 



1. L. atra, Ach. Univ. p. 344. 



Soeotra. Corticola. B.C.S. nn. 1302, 1465 pro parte, 1467 pro parte. 

 Saxicola. B.C.S. n. 1391 pro parte. 

 Distrib. Common everywhere. 



2. L. notha, Mull. Arg. in Proc. Roy. Soc. Edin. xi. (1882), 460. 



Simillima Lecanorm atrce, Ach. sed thallus (crassus) minus laevis, areolae minutissime vel obsolete 

 rugulosae, magis flavo-cinerascentes, et lamina omnino alia, hyalino-virescens, epithecium 

 aeruginoso-nigricans et sporae taatum 8-10 /a longae, 7-8 /u, latse. Reliqua cum melano- 

 carpica L. atra, Ach. conveniuut. 



Juxta L. sitbfuscam, Ach. locanda est, cujus var. atryneai, Ach. nonniliil habitu accedit etiamsi 

 discus multo pallidior. 



Soeotra. Saxicola ad parietes septentrionales montis Bagul, alt. 500 m. 

 Schweinf. 



Distrib. Endemic. 



3. L. subfusca, Ach. var. chlarona, Ach. Syn. p. 158. 



Soeotra. B.C.S. n. 1364 pro parte. Supra Wadi Digal, alt. 300 m. in 

 ligno decorticato Balsamodendri. Schweinf. 



Distrib. Common in tropical and warmer regions, rarer in temperate 

 countries of both hemispheres. 



4. L. angulosa, Ach. Lichenol. Univ. p. 364. 



Soeotra. Ramicola. Schweinf. 



Distrib. Common in Europe. Recorded also from the higher parts of 

 Brazil and Chili. 



5. L. socotrana, Mull. Arg. in Proc. Roy. Soc. Edin. xi. (1882), 460. 



Thallus albido-flavicans v. hinc inde sulphurascens, interdum decolorato-albescens, limitatus, 

 erassiusculus, tenuiter rimulosus, lsevis, nudus v. leviter pulverulentus, intus e flavesente 

 albus. Gonidia globosa, 4-10 //. diametro aequantia. Apothecia 1-1J mm. lata, adpresso- 

 sessilia, margo integer, saepe paullo undulatus, cum thallo concolor, interdum sulphurascens, 

 discus planus, dein mod ice convexus, fuscescenti-carneus v. subgilvus, nudus v. rarius 

 obsolete pruinosus, lamiua et hypothecium hyalina. Sporae in ascis angustis octonae, 

 9-11 fi longae, 5— 5 J /j, latae. 



Habitu ad L, orosteam, Ach. accedit, sed sporae minores et thallus sublaevis, firmus, quasi ut in 

 L. rimosa, Ach. sed flavicans. Prope hanc et L. Jlavido-pallentem, Nyl. (Lecan. Cub. n. 8) 

 et L. glaucodeam, ejusdem, inserenda est. 



Soeotra. Ad saxa quartzosa vulgaris et characteristica species insulse, 

 B.C.S. nn. 1356, 1402 pro parte, 1405 pro parte, 1408 pro parte, 1409 



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