NEW BRITISH LICHENS. 
ABRAHAM SHACKLETON ann THOMAS HEBDEN, 
Keighiey. 
WE are glad to record the following new British Lichens, as described’ 
in manuscript by Dr. Wm. Nylander, of Paris, of which the following 
is a translation. 
Verrucaria malhamensis Nyl., nov. spec. Thallus, albido- 
cinerascent, thin, continuous; apothecia, black, prominent 
(o.3 mm. diam.), impressed, interior uncoloured (occasionally 
slightly smoky); spores, 8 in each ascus, oblong, simple, 
long ‘014-16 mm., broad ‘oo5-6 mm. 
Similar in facies to Verrucaria dufourit D.C., with affinities 
to Verrucaria pulicari Mass. 
Damp shady rocks near the ground; Malham, Gordale, 
Sep. 1891. 
Verrucaria spurcella Nyl., nov. spec. Very similar to Verrucaria 
intercedentis Nyl., except thallus thinner, obscurely smoky, 
spores uncoloured, murali locular, long -o22-25 mm., broad 
‘OlI-I4 mm 
Limestone walls; Malham, Gordale, Sep. 1891. 
Verrucaria cataleptoides, f. ferruginosa Nyl. Pyrenoc, p. 26, 
Lamy, Catal., p. 160. Spores, long ‘org-23 mm., broad 
009-II mm. 
Limestone crags, Malham, Sep. 1891. 
Verrucaria limitata Kphb. Nyl. Scan., p. 275; Koerber 
parerga, p. 374. Spores, long ‘or4-16 mm., broad ‘oo7 mm. 
Limestone crags, Malham, Sep. 1891. 
Verrucaria macrostoma Duf. f. aphanostoma.  Ostiolis 
minoribus. Spores, long 026-36 mm., broad o16-20 mm. 
On mortar, and wall-tops, sandstone, Cullingworth; Malsis, 
Crosshills. 
Verrucaria hydrela Ach. Scher. Enum., p. 209. Obscurior; 
spores, long ‘o18-27 mm., broad ‘006-8 mm. 
On stones, submersed; Braithwaite, Keighley. 
Verrucaria peloclita Nyl. f. continuella Ny!. Thallus, white, 
continuous. 
Damp rocks, Malham, Sep. 1891. 
Lecidea (Biatora) rubidula we Nyl. in Flora, 1884, p. 214, 
and Lichens Freti Behring, p. 3 
______ Limestone crags, Malham, Gente May 1891. 
Jan. 802. 18o2, 
