Arthothelinm adriaticum .A. Zahlbr. nov. Spec. 
Thallus crustaceus, uniformis, tenuissimus, maculatim 
effusus, submembranaceus, lacteus, nitidulus, KHO lutescens, 
CaCI1,0,—, laevigatus, continuus, sorediis et isidiis destitutus, 
obscurius non limitatus.. Apothecia sessilia, dispersa, e rotundo 
demum breviter linearia, usque 1'’2 mm longa, recta vel cur- 
vata, convexa, primum leviter thallino-vestita et albicantia, 
demum nuda et nigra, emarginata; hypothecium pallidum; 
hymenium superne anguste aeruginoso-nigricans, KHO in 
olivaceum vergens, caeterum pallidum, J vinose rubens; para- 
physes parum distinctae, intricatae; asci ovali- vel ellipsoideo- 
cuneati, $8spori; sporae decolores, oblongo- ovales, in medio 
leviter angustatae, septis horizontalibus 5—6, cellulis mediüs 
septo verticali unico divisis, 15—20 p longae et 6—8 , latae. 
Pycnoconidia oblongo-bacillaria, recta vel subrecta, 3-54 
longa et ad 1 y lata. : 
Insula Cazza, ad ramulos Euphorbiae dendroidis. 
Arthothelium sardoum Bag]. tangit, ob apothecia elon- 
gata et ob spores minores minusque sSeptatatas ab eo remo- 
vendum. 
Gyalecta microcarpella A. Zahlbr. nov. spec. 
Thallus pro maxima parte endolithicus, pars epilithic: 
tenuis, rosacea vel persicina, rarius rosaceo-glaucescens, Opa 
cus, KHO-, CaCl1,0,—, effusa, subverruculoso-inaequalis ve 
rimoso-areolata, madefactus odorus, sorediis et isidiis desfi 
tutus. Apothecia minuta, 0:2—0'25 mm lata, immersa, rotund: 
vel rotundata, a thallo leviter secedentia, margine thallino rosa 
ceo vel albido, tenui et integro -cincta; discus minutus, fer 
punctiformis, ceraceo-lutescens, KRKHO-+CaCl,O, subaurantia 
cus, demum obscuratus; excipulum valde angustum; epithe 
cium distinctum nullum; hypothecium lutescens, molle; hyme 
nium decolor, J dilute coerulescens; paraphyses filiforme: 
eseptatae, liberae; asci oblongo-clavati, 8spori; sporae de 
colores, ellipsoideae vel ovali-ellipsoideae, murali-divisae, Se 
