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168 B.A.N.Z. ANTARCTIC RESEARCH EXPEDITION<br />
Type : Kergueleil: Sulain's Bay, A. E. Eaton (Venus Transit Exp.).<br />
Thallus thin, buffy brown, 1-imose areolate, areoles polygonal, very regular, 0.5-0-7 mm. in<br />
diameter, separated by relatively wide cracks, K yellow then cinnabar red and ferruginascent ;<br />
cortical layer about 35p thick, decomposed and gelified ; algae protococcoid in small discrete colonies,<br />
cells 6-7p in diameter; medulla loosely woven, including many rock crystals. Apothecial warts<br />
slightly convex areoles 1-2 mm. in diameter, containing many small thecia, disc punctiform, blaclr,<br />
slightly depressed; ampithecium not differentiated from the thallus; parathecium 35p thick,<br />
hyaline, gelified, of pericliiial hyphae, completely surrounding the thecium except at the narrow<br />
disc ; thecium subspherical, about 400p in diameter ; paraphyses slender, branched and anastomosing,<br />
relatively few, scattered throughout the thecial gel; asci cylindric, 370-400 X 65-70p, walls<br />
gelified about 20p thick, 68-spored; ascospores variable in size and shape from ovoid to ellipsoid,<br />
55-105 X 30-70p, sheath 8-12p thick. Spermogonia immersed, 150-180p in diameter, wall not<br />
clearly differentiated; spermatiophores lageniform cylindric, fasciculate; spermatia straight or<br />
slightly curved, 16-23 X 0-5-0. 6p.<br />
Growing on rocks with Thelidium praevalescens, Encephdographa cerebrinella, Lecidea<br />
asbolodes, L. Auberti, L. intersita, L. Eatoni, L. phaeostoma, Thalloidinm kerguelensis, Rhizocarpon<br />
Johnstvni, R. kerguelmse, R. urceolinum, Aspicilia dkjungwnda, A. endochlma., Lecanora. atrocaesia,<br />
Buellicc subplicata and B. tristiuscula; parasitized by Lecidea superjecta.<br />
Crozet Archipelago : Possession Island, American Bay, B.A.N.Z.A.R.E. B20-9.<br />
Kerguelen: &L~~rray Island: B.A.N.Z.A.R.E. B210-2, B211-2, B530-1, B530-6, B530-7,<br />
B530-10 ; Observatory Bay, B.A.N.Z.A.R.E. B192-19, B192-65 ; Royal Sound, B.A.N.Z.A.R.E.<br />
B90-12 ; Grave Island, B.A.N.Z.A.R.E. B91; Greenland Harbour, B.A.N.Z.A.R.E. B177-31,<br />
B177-32, B177-39, B17745, B17746, R17747 ; PoincarB Peninsula, BA.N.Z.A.R.E. R126-13<br />
F. SURFERRUQINOSA Zahlbr., Deutsche Siidpolar Exp., 8, 45 ; 1906.<br />
Pertusaria perrimosn f. subferrwginosa Crombie, Jour. Linn. Soc. Bot., 15,186; 1876.<br />
Pertusaria su.bferrz~ginosa Crombie, Phil. Trans. Roy. Soc. [London], 168, 50 ; 1879 : Rept. Sci.<br />
Results Voy. '(Challenger" Bot., 1,2,326; 1885.<br />
Type: Kerguelen, Royal Sound and Observatory Bay, A. E. Eaton (Venus Transit Exp.).<br />
Thallus more or less ferruginous.<br />
This form does not seem worthy of recognition. As in so many other instances, whitish thalli,<br />
growing upon rocks coiltaining an abundance of iron are easily stained ferruginous. In our speci-<br />
mens, one can find all gradations of colour.<br />
F. ZONATA Zahlbr., Deutsche Siidpolar Exp., 8,45 ; 1906.<br />
Type : Kerguelen, on rocks in valley between Mittleberg and Station, also Penguin Bay, Werth<br />
(Deutsche Siidpolar Exp.) .<br />
Thallus with broadly zonate margins.<br />
We have seen no material referable here.<br />
PERTUSARIA CINERARIA Nyl.<br />
Pertmria cinerm'a Nyl. ap. Crombie, Jour. Linn. Soc. Bot., 15, 186 ; 1876 : Phil. Trans. Roy. Soc.<br />
[London], 168, 50 ; 1879 : Zahlbr., Deutsche Sudpolar Exp., 8,45 ; 1906.<br />
Pertusaria cinereacrombie, Rept. Sci. Results Voy. "Challenger." Bot., 1, 2, 236; 1885 lapszis<br />
cdami.
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