NEW BRITISH LICHENS. 
19 
approaching to the section of Lecidea uliginosa amongst the 
Biatoras. Yerj sparingly gathered. 
3. Lecidea columnatula. Nyl. — Thallns sordid-yellow, sub- 
granulato-unequal, of moderate thickness, rimoso-diffract, com- 
pacted, as it were, of erect connated columnnles (above and 
internally K -f yellow); apothecia black, superficial, somewhat 
plane, subimmarginate, small, when young with evanescent, 
obtuse margin, internally whitish ; spores 8 nse., colourless, 
oblong, 1 septate, 0-012-16 mm. long, 0-004 mm. thick, para- 
physes not very well discrete, epithecinm and perithecium 
blackish; hy menial gelatine bluish, and then tawny wine-coloured 
with iodine. Spermogones with the sterigmata articulato- 
compound and branched, the spermatia oblong, O'OOSO — 35 mm. 
long, 0-0006 mm. thick. 
On micaceo-schistose rocks. Kylemore, Galway (Larbalestier). 
This species belongs to a distinct section. 
4. Lecidea irupicola. Nyl. — Thallns glaucous, thin, opaque, 
subriniulose ; apothecia pale-livid or livid-brown, plane, margined, 
small, often with a spurious thalline margin ; spores 8 me., oblong, 
1 septate, 0-010-11 mm. long, 0-004 mm. thick, paraphyses nearly 
moderate, epithecium sub yellowish, granulose ; hymenial gelatine 
bluish, and then wine reddish with iodine. 
On moist schistose rocks. Kylemore, Galway (Larbalestier). 
Perhaps not specifically distinct from L. cyrtella. 
5. Lecidea littore^la. Nyl. Thallus glaucous-green, very thin, 
rimulose ; apothecia pale-yellow, biatorine, thin, small, sub- 
margined ; spores 8 nge., oblong, 1 septate, 0*008-12 mm. long, 
0*0035-45 mm. thick, paraphyses slender, epithecium and 
hypothecium colourless ; hymenial gelatine bluish, and then wine- 
reddish with iodine. 
On schistose rocks, shores of Lough Inagh, Galway (Larbales- 
tier). Allied to the preceding species, but the apothecia have 
somewhat the appearance of those of Lecanora polytropa. 
6. Lecidea valentior. Nyl. Thallus greyish or sub -greenish, 
thin, continuous, rimose ; apothecia brown, immarginate, somewhat 
plane or convex, often obtusely submargined, the margin pale ; 
spores ellipsoid, 0'012-17 mm. long, 0*006-8 mm. thick. 
On moist friable quartz rocks, shores of Lough Inagh, Galway 
(Larbalestier). This seems to be only a subspecies of L. 
scrnguineoatra, from which it scarcely differs, unless in the con- 
stantly larger spores. 
7. Veirirucairia submisenima Nyl. — This is scarcely more than 
a subspecies of V. pyrenastrella with smaller apothecia and 
thinner spores (0*016-19 mm. long, 0*004-5 mm. thick, some- 
times obsoletely spuriously, 3 septate.) 
On the bark of holly, Kylemore, Galway (Larbalestier). This 
species has somewhat the appearance of M ycoporum miserrimum. 
