463 
of Edinburgh , Session 1881 - 82 . 
marginata; sporae orculiformes 12-14 fx longae, 6-8 fx latae. — Ad 
saxa granitica : B.C.S. et Schweinf. 
Lecidea (sect. Biatora ) contractula, Mull. Arg. : tliallus cinereo- 
flavicans, continuus, leviter rugulosus ; apothecia vulgo in depres- 
sionibus leviusculis thalli sita, subinnato-adpressa, obscure fusca et 
plana, madefacta fusca, convexa et immarginata, lamina 55 fx alta, 
apice olivascens, caeterum cum hypothecio hyalina, parapbyses 
liberae ; sporae octonae, 9 [x longae, 5 fx latae. — Quartzicola : Schweinf. 
Lecidea (sect. Biatora) plumbeella, Mull. Arg. : thallus pallide 
virenti-plumbeus, continuus, levigatus ; apothecia innata, haud 
emergentia, discus mm. latus, concaviusculus, fusco-nigricans, 
epithecium fuscescens, lamina cum hypothecio hyalina, circ. 100 jx 
alta ; sporae 8-nae, 9-1 1 fx longae, 4 J-6 /x latae. — Brasiliensi L. im- 
presses Krplh. affinis. — Ad saxa granitica : Schweinf. 
Patellaria (sect. Biatorina) obfuscata, Mull. Arg. : thallus 
obscure rufescenti-fuscus, tartareo-leprosus, rimoso-areolatus ; apo- 
thecia J mm. lata, plana, margo primum cum thallo concolor, mox 
nigrifactus, integer, discus niger, planus, opacus ; epithecium 
fuscum, lamina cum hypothecio hyalina; paraphyses sat liberae; 
sporae octonae, 18 fx longae, 2J fx latae, 2-loculares, valide bacillares. 
— Juxta P. lenticidarem locanda. — Graniticola : B.C.S. 
Patellaria (sect. Catillaria) sigmoidea, Mull Arg. : thallus 
tenuiter tartareus, demum rimoso-areolatus, lacteo-albus, hinc inde 
hypothallo perspicuo coerulescens ; apothecia nigra, intus inferne 
atro-grisea, 1 mm. lata, demum convexa et tenuiter marginata ; 
epithecium aeruginoso-atrum, lamina vinoso-fuscescens, hypothe- 
cium crassum, atrofuscum ; sporae 2-loculares, fusiformi-ellipsoideae, 
utrinque acutatae et sigmoideo-curvatae. — Ad saxa granitica : B.C.S. 
Patellaria (sect. Raphiospora ) decussata, Mull. Arg. : thallus 
tenuis et depauperatus, minute leproso -granular is, argillaceus, lineis 
nigris hypothallinis peragratus ; gonidia gloinerulosa ; apothecia 
l-j mm. lata, atra, crasse et prominenter nigro-marginata, discus 
planus; epithecium virenti-nigrescens, hypothecium inferne fusees- 
