DR. LINDSAY ON NEW-ZEALAND LICHENS. 547 
of those of L. arceutina, as delicate and nearly as long as the bodies (filaments) of the 
paraphyses, with which they are apt to be confounded when their septa are indistinet 
(as they generally are) or invisible; colourless, polyseptate, 0015” to ‘0224 long, 
00008” to 00010” broad. 
Sp. 6. L. SABULETORUM, Flk. (Fig. 10.) 
On mica-slate, Otokia Bluff; on the face of the limestone cliffs near Greenisland 
church, Otago: W. L. L.: in fruit, but apothecia seen with difficulty, unless moistened. 
Hymenium beautiful blue with iodine; constituents indistinct. Hypothecium granular, 
dark brown.  Paraphyses-tips closely aggregated, and covered by a brownish-yellow 
membrane. Thecæ :0024" to *0030" long, ‘0006 broad. Spores fusiform, colourless, 
polyseptate, "00075" to ‘0009 long, :0002" broad. 
Sp.7. L. FURFURACEA, Pers. (Fig. 11.) 
On trunks of dead trees, Saddle-hill bush, Otago: W. L. L. Spores ellipsoid or sub- 
oblong, colourless, simple, :00025" to “00030” long, 0001” to *0002" broad. Thecæ 
short, 8-spored, ‘0012” long, 00045” broad; blue with iodine, as is also generally the 
hymenium. Paraphyses-tips brown, closely united; paraphyses, spores, and thecæ all 
more or less indistinct. 
Sp. 8. L. MARGINIFLEXA, Tayl. (Fig. 12.) 
On the trunks of dead trees, Greenisland bush, Saddle-hill bush, and East Taeri 
bush, Otago : W. L. L.: in fruit ; one of the commonest and most prominent corticolous 
Lecidee of the Greenisland district of Otago. Its apothecia have externally - ed 
racters of those of L. grossa; but the l-spored thecæ and large spores at once distin- 
guish it. A : 
Spores in maturity (b) oblong, 1-septate, generally a constriction at m ta Pt m 
septum, giving them a figure-8 outline; colourless, 0045" to 0060" long, or ai, í 
easily divided into two halves (d) at the septum by friction of the TRR EE es; 
in the young state simple, with a protoplasm largely JU (in globules p a pars 
how 1.spored; blue with iodine. Paraphyses subdiscrete, deii NE 
brown tuberculated tips. Apothecia large, prominent, black; scattered sparing f over 
the conspicuous, white, crustaceous thallus; variable as w oic ap did rum 
glaucous, white-pruinose, or citrine yellow, resembling in its hues L. p = "t "i 
Nyl. (L. N. Z. 255): it occasionally becomes eroded or falls away, leaving t donem a: 
coloured hypothecium. Exeiple also sometimes eroded; old apothecia p ee 
come degenerate and difform, pale-coloured, convex, and biatorine. xa = 
abundant and distinct as subperipheral black conceptacles crowning min 
tubercles. 
In herbarium Kew there is co 
Specimen is referred by Nylander, 
Island New-Zealand form (from Colenso, 
the apothecia are white-pruinose, the m 
nsiderable confusion with L. 
and rightly, l think, to L. 
No. 5317, woods, Kawakawa, 
argin distinct and thick, the thallus cream- 
