Bd. IV: it) THE LICHENS. 41 



Mastodia Hook. fil. et Harv. 



Mastodia tessellata Hook. fil. et Harv. - - Wain. Belg. p. 36, pi. IV, fig. 33 

 and 34. — PL 3, fig. 36. 



Literature: Hook. Fl. Ant. II, p. 499, pi. 194, fig. II. 



Distribution: Eastern Asia; South America and Antarctis; South Georgia; Kerguelen. 



Localities: Tierra del Fuego (6); South Georgia* (13); South Shetland Islands (21); 

 Graham Land (23, 24, 28, 30). ■ — On stone, in fruit. 



Fungi parasitici. • 



(These are not included in any of the statistical lists.) 



Chaetomium bacidiae nov. spec. 



Description: p. 18. 



Locality: Falkland Islands* (9). ■ — Parasitic on Bacidia tuberculata. 

 Didymosphaeria placodiorum Wain. — Wain. Belg. p. 39. 



Distribution: Antarctis only. 



Locality: Graham Land (28). — Parasitic on the thallus of Placodium elegans, in fruit. 



The Localities of the Expedition. 



Tierra del Fuego, Usliuaia. 



On trees: Ochrolechia pallescens; Haematomma puniceum; Pannoparmelia an- 



zioides; Parmelia enteromorpha, lugubris, olivacea, pertusa; Cetraria glauca, 



ulophylla; Letharia Poeppigii; Usnea xanthopoga ; Psoroma sphinctrinum; 



Sticta Freycinetii, granulata, obvoluta, orygmaea; Stictina carpoloma, crocata, 



filicina; Nephroma australe. 

 Over old plants: Cladonia digitata; Psoroma ciliatum, hypnorum. 

 Over earth, often mixed with moss: Sphaerophoron coralloides; Stereocaulon 



tomentosum; Cladonia deformis, furcata, pyxidata, rangiferina, squamosa, 



subsquamosa; Parmelia saxatilis, sulcata; Cetraria gracilenta; Physcia stellaris; 



Peltigera canina, malacea, rufescens, spuria; Solorina spongiosa. 

 On stone: Lecidea elaeochroma; Xanthoria lychnea; Placodium elegans; Neuro- 



pogon trachycarpum. 



6 — H2SG3. Schwedische Südpolar-Expcdition. 



