188 REV. J. M. CROMBIE ON LICHENS 



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Lecidea amylacea, Ach., Nyl. The specimens seen are sufficiently 

 similar to the European plant, differing only in the epithecium being 

 brownish, while in the European plant it is subcaerulescent. 

 On rocks. Swain's Bay. 



Probably not uncommon. 



L. subassentiens, Nyl. 3 sp. n. Thallus albidus tenuis, subrugulosus 

 vel laevis, rimosus (K flavens) ; apothecia nigra plana raarginata (latit. 

 0*5-0*7 millim.), intus obscure caerulescentia ; sporae 8nae ellipsoideae, 

 longit. 0010-0012 millim., crassit. 0*006-0-007 millim., epithecium 

 caerulescens, paraphyses gracilescentes, hypothecium incolor, perithe- 

 cium nigrum. Iodo gelatina hymenialis caerulescens, thecae deinde 

 subviolacee rubescentes. 



Affinis Lecidea diasemoidi, Nyl., sed differens sporis nonnihil minoribus 

 et spermatiis longioribus. Facie externa satis convenit cum L. assen- 

 tiente. Thalamium supra caerulescens. 



On rocks. Royal Sound. 



Very sparingly gathered. 



L. perusta, Nyl., sp. n. Thallus hypothallo nigro tenui aequabili con- 

 tinuo constans, in quo sparsae areolae fusco-rufescentes vel fusco- 

 cupreae, rotundato-angulosae, minutae, aggregatae, impressae, concavi- 

 usculae et circumscissae ; apothecia nigra demum prominula convexi- 

 uscula, marginata aut submarginata (latit. circiter 1 millim.), intus 

 tota obscura ; sporae 8nae incolores ellipsoideae, demum nigrescentes, 

 longit. 0-024-0-036 millim., crassit. 0*011-0-018 millim., pariete di- 

 stincto, paraphyses gracilescentes, epithecium fuscescens, hypothecium 

 incolor. Iodo gelatina hymenialis intensive caerulescens (etiam thecae 

 sic tinctae). 



Species videtur stirpis omnino propriae, facie quodammodo accedens ad 

 L.fumosam. 



On rocks. 



At all the stations, though very sparingly and rarely in its best- 

 developed state. 



L. asbolodes, Nyl., sp. n. Thallus fuligineus subopacus tenuis con- 

 tinuus determinatus. Apothecia nigra plana marginata (latit. 0-5-0-6 

 millim.) ; sporae 8nae subglobosae vel breviter ellipsoideae, longit. 

 0*008-0*010 millim., crassit. 0*007 millim., paraphyses graciles, thala- 

 mium cum hypothecio (in lamina tenui) lutescens, epithecium luteo- 

 fuscescens, perithecium nigrum. Iodo gelatina hymenialis caeru- 

 lescens, dein subincolor et thecae (praesertim apice) violaceo-tinctae. 



Facies externa fere Lecidea leiotece, Nyl. in Flora, 1867, p. 328, quae 

 vero differt apotheciis vix marginatis, paraphysibus crassioribus &c. 

 Variat thallus obsolete rimulosus. 



On rocks. Royal Sound. 



Apparently not uncommon. 



