DURING THE ' CSALLENaEE ' EXPEDITION. 221 



9. Lecidea disjungenda, Crorab. in Journ. Bot. 1877. 



10. L. STEPHANODES, Sim,, sp. n. Thallus albidus vel cineraa- 

 ceus (vel fcrro tinctus ochraceus, f. ferruginea)^ tenuis, subrugu- 

 losus, contiiiuus : apothecia nigra superficialia (latit. circiter 1 

 millim.), plana, crasse marginata margine obsolete radiatiin rimoso- 

 subdiffracto ; sporse 2-8n8e incolorcs ellipsoidese simplices, longit. 

 0-038-0-056 millim., crassit. 0021-0'034 millim., paraphyses dis- 



^ eretae graciles, epithecium fuscescens, hypothecium cum perithecio 



' crasse nigrum. lodo gelatina hymenialis intensive cserulescens. 



This is a very well-marked species with large spores, belonging 

 to the section of i. contigua. 



On rocks ; only a fragmentary specimen seen, 



11. L. suPEiiJECTA, iV^?., sp. n. '^Parasita, apotheciis nigris 

 superficialibus corrugato-plicatis (latit. 0*5 millim. vel minoribus), 

 intus concoloribus : sporse Snse incolores ellipsoidese simplices, 

 longit. 0009-0-011 millim., crassit. 0*006 millim. ; epithecium an-^ 

 gustum subincolor, paraphyses gracilescentes, hypothecium cum 

 perithecio (etiam implicato) nigro. lodo gelatina hymenialis cse- 



> rulescens, dein vinose rubens." N'yL in litt. 



Parasitic on the thallus of Z. disjungenda ; only a very few 

 apothecia seen. 



12. L. GEOGEAPHICA (i). 



On rocks, associated with other lichens. 



13. VeRBITCAEIA iETHIOBOLA, Ach^ 



On rocks, very sparingly, along with Z. suhjungenda, 



14, V. cokgesti'La, Strn,, sp. n. Apothecia nigra rugosa 



coarcervato-congesta, pyrenio integre nigro (latit. fere 0*7 millim.); 



^ sporas 8naB, demum infuscatae, breviter ellipsoideae, submurali- 



divissB, longit. 0-021-0025 millim., crassit. 0016-0018 millim. ; 

 thecse cylindracese, paraphyses parcse mollissimse. lodo gelatina 

 hymenialis non tincta, thecge autem demum vinose fulvescentes. 



Parasitic on the tballus oi Lecanora macropTithalma ; but pro- 

 bably only a Sjpihcdria, 



On rocks ; very sparingly seen. 



Maeion Islaxd, 



1. Steeeocaulon ? 



On the ground ; a mere fragment, indetwminable. 



