NEW BRITISH LICHENS. 
29 
wliite-siiffused ; spores S-nae, brownish, 8-12 locular, 0,036-50 
m.m. long, 0,007-0,011 m.m. thick ; lijpothecium black. 
On moist micaceous rocks. Connemara (Larbalestier). 
22. Verxucaria aquilella. Nyl. — Thallus lurid brown or sub- 
aquilous, minutely areolate or areolato-granulated, thin ; apothecia 
with the pyrenium dimidiately black, denudate, rugulose ; spores 
8-nae, ellipsoid, simple, 0,018-22 m.m. long, 0,007-9 m.m. thick. 
On micaceous rocks. Connemara (Larbalestier). 
Differs at once from V. umhrinula^ in having the thallus 
firmer and not subleprose. 
23. Verxucaxia leptaleella. Nyl. — Subsimilar to V. leptalea 
(Mnt.), but with thallus greenish, very thin, subleprose ; spores 
thinner, 0,016-20 m.m. long, 0,0025-0,0030 m.m. thick. 
On the bark of trees. Connemara (Larbalestier). 
24. Vexzucaria tenuifexa. Nyl. — Sufficiently similar to F. 
chhrotica^ with thallus thin, greyish, rimulose (gonidia subchroole- 
poid) ; apothecia small, pyrenium dimidiately black, convex ; 
spores bacilliform, 3-septate, 0,029-33 m.m. long, 0,0035 m.m. 
thick. 
On quartzose rocks. Jersey (Larbalestier). 
25. Vexxucaxia fusco-cinexascens. 'Nyl. — Thallus greyish- 
brown, areolato-rimose, unequal, thin ; apothecia with the pyrenium 
entirely black, the half of the upper portion denudate, convex ; 
spores 8-nae, oblong, 0,022-27 m.m. long, 0,008-0,010 m.m. 
thick. 
On micaceous rocks. Connemara (Larbalestier). Allied to V. 
fusco-nigrescens. 
26. Vexxucaxia holochxodes. Nyl. — Sufficiently similar to 
F. lectissima^ and probably a subspecies of it, differing especially 
in the ochraceo-reddish, thin, continuous, indeterminate thallus. 
Spores fusiform, 3-septate, 0,023-34 m.m. long, 0,005 6 m.m. 
thick. 
On shady slaty rocks. Connemara (Larbalestier). 
27. Melanotheca ischnobela. Thallus glaucous-whitish, 
macular ; apothecia black, convex, rotundate or suboblong, py- 
renium dimidiate, black, 2-4 hymenia collectively in each apothe- 
cium, the hymenia contiguous, obliquely situated and confluent at 
the apices, ostiole scarcely any ; spores 8-na3, colourless, very 
thinly acicular, 0,060-0,115 m.m. long, about 0,001 m.m. thick, 
thecee cylindrical, elongated; paraphyses very slender, crowded; 
hymenial gelatine, not coloured by iodine. 
On the bark of holly. Near Kylemore, Galway (Larbalestier). 
In addition to these, a few new varieties and forms are also 
described by N}’lander in the above Nos. of the “ Flora.” These 
are as follows : — 
Lecidea metamoxphea (*) septenaxia. Nyl. — Scarcely more than 
