The Scottish Naturalist. 165 



Ltcidea tdiginascens n.s. — Similis L. uliginosce. sed apotheciis 

 nigris, majoribus et intus K. violacee tinctis vel violacee dis- 

 solutis. Thecae confert^e, sporae .01-.013 x .006-.007 mm., 

 paraphyses parcae irregulares graciles ; hypothecium fusco- 

 nigrum. lodo gel. hym. leviter vel vix coerulescens dein 

 obscure vinose rubens. 



Supra teiTam turfosam prope Garve, cum Z. uligijtosa intermixta. 



Ltcidca cndocyanea n.s. — Thallus cinereus vel cinereo-niger vel 

 etiam niger, squamuloso-diffractus, squamulis planis vel con- 

 vexiusculis adpressis (K — C — ) ; apothecia fusco-nigra pri- 

 mum parva et urceolata, demum expansa plana vel convexa 

 et immarginata, sessilia, intus, fere omnino sed praesertim 

 supra, violacea (latit. .2-. 5 mm.) ; sporae in thecis 

 cylindraceis infra attenuatis, 8nas ellipsoideae vel oblongo- 

 ellipsoideas, incolores simplices, .011-.014 x .006-.007 

 mm. ; paraphyses distinctse filiformes apicibus intricate 

 contextis ; hypothecium leviter fuscescens vel fere incolor. 

 lodo gel. hym. coerulescens dein passim flavescens et 

 thecae fulvescentes. 



Saxicola in Mull. 



The epithecium is composed of the apices of the paraphyses 

 densely and inextricably compacted, and, overlying this, in 

 very many instances if not in all, is another dense granular 

 layer of a still deeper colour. A thin section of an apothecium 

 reveals a beautiful violet colour, which deepens upwards, and is 

 rendered a dirty bluish -green by K. The thecae are composed 

 of thickish and apparently toughish walls, while in the specimens 

 examined, few matured spores have been detected. 



This lichen is allied to L. tenebrosa (Flot.) but certain char- 

 acteristics seem to indicate affinities to the genus Miiaspilea. 



Lecideainterpolata n.s. — Thallus fuscus vel nigro-fuscus vel etiam 

 niger, minute squamuloso-areolatus, areolis adpressis con- 

 tiguis, vel dispersis, determinatus, hypothallus niger; 

 apothecia nigra, adnata parva (latit. .2-.3 mm.), plana 

 marginata; sporae 8nae in thecis saccatis, ellipsoideae 

 virescentes vel fuscae, i-septatae, binucleatae, nucleis 

 majusculis plerumque virescentibus et interdum a tubula 

 conjunctis; paraphyses graciles non bene discretae, 

 apicibus fusco-nigris clavatis conglutinatis ; hypo- 

 thecium incolor. lodo gel. hym. coerulescens dein obscure 

 violacea, thecae vinose fulvescentes. 



