64 Dr. Nylander on new British Lichens. 
irregulares, vel vix ulle. Gelatina hymenea iodo haud tincta 
(lutescens). 
Discovered by Admiral Jones, on the earth of Ben Hey 
growing with V. nigrata, Nyl. 
An hue pertineat Spheria Schereri, Mass. Sulla Lec. Hook. 
p. 82? Sporas multoties minores indicat. 
18. Verrucaria superposita, Nyl. 
Thallus forte nullus Breueiss apothecia nigra, turgidula, peri- 
thecio (latit. O°20—-0°25 millim.) integre nigro, epithecio i im- 
presso; spore 8"*, incolores, ovoider, i -septatee, longit. 
0:017-0°:019, crass. 0:007-0-008 millim. ; paraphyses nulle. 
Gelatina hymenea iodo vinose rubens. 
Discovered by Admiral Jones and Isaac Carroll, Esq., grow- 
ing on the thallus and hypothallus of V. theleodes, Smrf.; also 
upon a thin, whitish, opake, granulate thallus, which may be 
possibly its own. 
19. Verrucaria allogena, Ny). 
Apothecia demum prominula (latit. 0°25 muillim.), perithecio 
dimidiatim nigro, parte immersa (vel infera ejusdem) sub- 
incolore (vel interdum leviter fuscescente) ; sporee incolores, 
l-septatee (forme sicut in V. epidermidis, Ach.), longit. 
0:023-0°027, crass. 0'008-0:009 millim. (paraphyses fere ut 
in var. fallax, Nyl.). 
Discovered by Isaac Carroll, Esq. (1864), on micaceo-schis- 
tose rocks on the summit of Ben Lawers, growing on the thallus 
of Lecidea excentrica, Ach. 
Only a variety of V. epidermidis, Ach. 
20. Verrucaria subintegra, Nyl. 
Thallus pallide cinereo-virescens, tenuis, rimulosus, mdetermi- 
natus; apothecia mediocria, convexula, prominula, perithecio 
integre vel subintegre nigro; spore fusiformes, 3-septatze, 
longit. 0°020-0:027 millim., crassit. 0-°006-0:007 mill. 
Discovered by Charles Larbalestier, Esq., on granitic rocks in 
the island of Jersey. 
Scarcely specifically distinct from V. chlorotica, Ach. 
21. Verrucaria dubiella, Nyl. 
Thallus cinerascens, cartilagineus, granulato-insequalis, sub- 
crenatus (an proprius?) ; apothecia nigra, parvula (latit. 
0:2 millim. vel minora), perithecio integre nigro; spore 8"®, 
incolores, oblongze vel ovoideo-oblongz, longit. 0: 016-0:021, 
crassit. 0-005—0-007 millim. ; paraphyses null. Gelatina hy- 
menea iodo vinose rubens. 
