GLASGOW SOCIETY OF FIELD NATURALISTS. 167 



incoloribus ; hypothecium rufo-fuscum vel pallide fuscescens. lodo 

 gel. hym. leviter coerulescens (prsesertim partis inferioris hymenii) 

 dein vinose rubens. Corticola. 



Arthonia neuridella sp. nov. 



Th alius pallidus tenuis (K fl. dein lente fulvescenti-rufus) : apo- 

 thecia sessilia fusca concava oblongo-linearia, recta vel undulata 

 (longit. usque 1*5 mm., latit. circiter '2 mm.), margine tballino 

 inflexo crassiusculo Isevigato cincta et margine proprio tenui later- 

 al!; sporse incolores oblongse vel fere cylindraceee ssepe curvulse 

 simplices, "008 — '01 X "0025 mm. ; parapbyses graciles indis- 

 tinctse, apicibas fuscescentibus ; hypothecium incolor. lodo gel. 

 hym. coerulescens (saltern leviter) dein bene vinose rubens. Corti- 

 cola. 



The generic place of this lichen is doubtful, inasmuch as the 

 spores are not matured. It may be referable to the genus Lecan- 

 actis, but as the latter is very vaguely defined I prefer classifying 

 the lichen as above, more especially as the thecse are arthonioid. 

 The paraphyses are rendered distinct by K when they are seen as 

 closely set anastomosing slender fibres. 



Parathelium Brodiei sp. nov. 



Thallus hypophloeodes vel macula pallescente vel pallide rufes- 

 cente indicatus : apothecia hypophlcBodea demum subnuda et pro- 

 minula (vel partim pellicula epidermidis obtecta), perithecio in- 

 tegre nigro, papilla ostiolari laterali thallodea pallida aut fusces- 

 cente : sporse (4 — 8)n8e incolores demum fuscescentes oblongse 

 vel oblongo-ellipsoidese, murali-divisse aut 7-9-loculares (loculis 

 2-3 divisis), -03 — -042 X -Oil - -018 mm. : paraphyses distinctse 

 filiformes. Corticolum. 



Parathelium nidificans, sp. nov. 



Simile prsecedenti sed thallo nonnihil pallidiore et sporis incolo- 

 ribus dein fuscescentibus 4-locularibus (sicut in Y. nitida), -014 — 

 •021 X '008 — -Oil mm. lodo gel. hym. interdum hinc inde 

 obsolete coerulescens dein flavescens. Corticolum. 



Affine P. induto (Nyl.) sed sporis mxilto minoribus, &c. 



