2 20 The Scottish Naturalist. 



Ad lignum caesum prope Ben Lawers. 

 Affinis L. a?itiiogcc (Strn.) 



Lecidea ilyophora, sp. n. 



Thalhcs niger nonnihil gelatinosiis tenuis ; apothecia nigra parva {latit. .2 — 

 .4 mm.), convexa immarginata demiun hemisphcBrica, rugosula^ intus tola 

 violacca sicut in Lecanora atra, K ca:r'tdescetiti-virescentia ; sporce Snts incolores 

 obovata — i.e., tino apice actctiores, interdum ciwvidce, 1 — 3 — septatce, .014— 

 .02 X .004— .005 mm.; paraphyses non distinctcE nonnihil irregiclares ; hypo- 

 theciimi concolor. lodo gel. hym. sordide ccerulescens. 



Ad lignum putrescens (Kinloch-Rannoch). 

 Affinis L. melcejice. (Nyl.), sed distincta praesertim hypothecio, 

 colore interno, &c, 



Lecidea arceutina f. deminuta (Fr.), v. ' Fr. Scand.,' p. 353. 

 Sports vix septatce, .045 — .06 x .001 — 0015 mm. 

 Ad corticem quercus prope Forres. 



Verrucaria explicata, sp. n. 



Thalhis pallidiis vel pallide cinereus, temiis, scepe disperses ; apothecia nigra 

 prominula {latit. .2 — .35 mm.), pcrithecio integre nigra; spora (4-8)«^ in- 

 colores, ellipsoideo' vel oblongo-ellipsoidece, interdum gibbosidce, i-septata, .024 — 

 .034 X .01 - .013 m7n.; paraphyses ntcllce. lodo gel. hym. vinose riibens. 



Supra saxa schistosa summo cacumine Ben Lawers. 



This may be V. siih'imulata (Nyl.), but the description given 

 in ' Flora,' 1874, p. 316, is defective, inasmuch as no mention is 

 made as to whether paraphyses are present or not, and the reac- 

 tions by Iodine on the hymeneal gelatine are not stated. 



Verrucaria addubitans, sp. n. 



Thalhis albidus, vix idhis visibilis ; apothecia nig)'a majuscula {latit. .8— 1.4 

 m77i.), promimda rotiindata vel sccpins oblonga, perithecio dimidiatim nigra ; 

 spora; (4-8);/^ incoloi'es ellipsoidece dein fusccc, 3-5 septatcE {septis transversis, 

 aliis irj'egulaj'ibiis vel longitiidinalibus junctis), interdum grosse graiudoscc, 

 .019 — .025 X .009 — .012 mm.; paraphyses longcv conferta gramdoso-inspersa:, 

 tubulaj'es et protoplasmate interruptim disposito repletcc. lodo gel. hym. non 

 tincta. 



Ad lignum decorticatum prope Kinloch-Rannoch. * 

 Endococcus exoriens, sp. n. 



Parasiticus iti thallo cujusdam Pannarise verisi?niliter P. brunneae. /ipo- 

 thecia semi-immersa parva fusco vel fusco-nigra pej'ithecio integro vel fere in- 

 tegi'O ; sporce 2>n£e fuscce ellipsoidea;, yseptatcc, .009 — .oil x .006 ;/////,; para- 

 physes nulla:. lodo gel. hyvi. vinose rubescais. 



