COLLECTED IN KERGUELEN LAND. 189 



Lecidea lygomma, NyL, sp. n. Thallus cinereus vel cinereo-cyane- 

 scens, tenuis, lsevis, rimulosus, nigro-variegatus; apothecia nigra suble- 

 norina (innata in receptaculo thallino lecanoroideo nigricante), plana 

 (latit. 1 millim. vel minora), subcircumscissa, intus subconcoloria strato 

 superiore subcaesio ; sporae 8nae incolores ellipsoideae, longit. 0*011- 

 0*015 millim., crassit. 0*006-0*007 millim., epithecium obscure caeru- 

 lescenti-nigricans, paraphyses inediocres, hypothecium nigrum. Iodo 

 gelatina hymenialis et cum thecis persistenter caerulescens. 



Thallus K supra et intus flavens deindeque cinnabarino-rubens, I—. 

 Species est peculiaris, faciei Lichenis e stirpe Lecanora gibbosce vel 

 fere Thelotrematis aperti. Margo lecanoroideus (etiam saepius hie 

 circumscissus, h. e. fissura cinctus) obliquus, intus tenuescens et ibi 

 subalbicans obsoleteque radiatim aliquoties fissulus. Analysis apo- 

 thecii affinitatem maximam prodit cum stirpe Lecidea contigtue. 



On rocks. At all the stations. 



Apparently not unfrequent. 



L. subcontinua, NyL, sp. n. Thallus plumbeus (vel in f. ferrea 

 ochraceus) laevigatus rimosus (crassit. circiter 0*5 millim.); apothecia 

 nigra innata plana marginata (latit. 1 millim. vel minora), intus con- 

 coloria strato supero albido ; sporae 8nae ellipsoideae, longit. 0*010- 

 0*016 millim., crassit. 0*006-0*008 millim., epithecium luteo- 

 fuscescens, paraphyses gracilescentes, hypothecium cum perithecio 

 nigrum. Iodo gelatina hymenialis caerulescens, caerulescentia sub- 

 persistente. Spermatia longa rectiuscula vel rarius leviter arcuata, 

 longit. 0-015-0*020 millim., crassit. 0*0005-0*0006 millim. 



Species bene distincta in stirpe Lecidea contigtue vel in L. parasemce, 

 nam inter ambas ambigit. 



On rocks. Swain's Bay and Royal Sound. 



Very sparingly gathered. 



- 



L. Eatoni, Cromb. Thallus albus vel caesio-albus, tenuis, continuus, 

 opacus (K+flavens, I—), hypothallo nigro (saepe maculose) instratus; 

 apothecia nigra innata plana im marginata (latit. circiter 1 millim.), 

 intus concoloria ; sporae 8nae oblongo-ellipsoideae, longit. 0*009-0*01 1 

 millim., crassit. 0*004-0*005 millim., epithecium caarulescenti-nigricans, 

 paraphyses breves crassae, hypothecium fuscum. Iodo gelatina hyme- 

 nialis caerulescens. 



On rocks.' Observatory Bay and Swain's Bay. 



Very sparingly. This species, which is sufficiently distinguished 

 by the above characters, belongs to the section of L. contigua. 



L. subplana, NyL, sp. n. Thallus albus tenuis inaequalis areolato- 

 diffractus ; apothecia nigra plana marginata, demum sublobatula et 

 convexiusoula margine evanescente, sat parva (latit. 0*5-0*9 millim.), 

 intus albida; sporae 8nae incolores, ellipsoideae, longit. 0009-0013 



