— 80 — 

 crit, r. 356; Lecidea alho-atra v. epipolia Nyl. Scand., p, 235, et 

 Lich. Ehrenb., p. 65, Lich. Larliai. n, 13; ad lapides oolithicos pluri- 

 ]jus locis, e. g. ad Gasser : Ehrenb., ad basin Pyraniidis Ghephren 

 iVequentissime : Larbal., et in deserto Risched prope Heluan : 

 Schweinf. 



— — V. inuroi'saiii Mass. Sched. crit. n. 357 ; ad Pyramidem 

 Sakkarrah ; (hb. Del.j inter Ariiphiloma Callopisma, et calcieola in 

 deserto Galala : Schweinf. 



■ V. îiiterinerïiuin Mfill, Arg. Thallus ut in var. sequente , 



haud albus, nec decorlicato-pulverulentus, apothecia distincte csesio- 

 pruinosa; calcieola in deserto Wadi Cherese in Aegypto média et in 

 summo monte Makkatan prope Cairo , nec non in siimmo Gebel 

 Cheschen in Wadi Gendel : Schweinf. 



V. areolatum Mûll. Arg., thallus crassiusculus, argillaceo- 



albicans, areolato-subdiflVaclus, areolas convexee, Iseves v. obsolète 

 pulvernlenlite, apothecia mox subimmarginata et plano-converxa ni- 

 gra V. obsolète ex atro cïesio-pruinosa ; in summo Gebel Cheschen in 

 Wadi Gendel ad saxa gneissiaca : Schweinf. 



51. Opeg^rapiia aegyptiaea MiiU.Arg.. lirellœ in thallo alieno 

 parasitica^, innato-sessiles, exiguce, 1/4 mm. longaî, primum patelli- 

 formes et nano-marginatce, mox ex orbicularilate ellipticse et grossius 

 marginatœ, solitaria? aut pulvinatim aggregata;, demum convexae et 

 difformes et immarginatge ; lamina cire. 55 ^ aila, fuscescens v. tenuis- 

 sima subhyalina, hypothecium fuscum, epithecium fuscum, paraphy- 

 sium apices segregatim visfe virentes et modice inciassatae ; asei 

 oblongato-obovoidei, apice (pro génère) modice pachydermei, 6-8-spori; 

 sporœ 14-17 p. longœ, 4-5 1/2 pi latœ, oblongato-ellipsoidcœ , semper 

 hyalinae, 4-loculares. — Fere cum « Leciographa parasilica » quadrat 

 sed pporse hyalinas et multo minores. — Thallus, cui apothecia insi- 

 dent, certe alienus, Diploiciaî canescentis, gonidiis vulgaribus nec 

 chroolepoideisgaudens. Planta ceeterum, uni ta cum ihallo alieno, haud 

 maie Lecanactiden Stenhammari Arn. F]xs., n. 560 refert. — Crcscit 

 ad lapides quartzosos deserli lil)yci prope Gasser eschtachi : Ehrenb. 



52. Artlionia paliniettla Ach. Syn., p. 5; Nyl. Lich. Larbal., 

 n. 14; in cortice Eici prope Alexandriam : Larbal. 



53. A. puiietiforitiis v. sut>eininula Nyl. Lich. Larbal., 

 n. 15; rara ad corticein Mimosœ in horto apud Abu Nischabeh ad 

 ranium Nili Piosetta diclum : Larbal. 



54. A. (lispersula Nyl. Lich. Larbal., n. 16; rara ad corticem 

 arl)orum in regione Alexandrina : T,arbal. 



54. A. Alexandrina Nyl. Lich. Larbal. , n. 17; ad corticem 

 Fici prope Alexandriam, parce : Larbal. 



56. A. adliacrcns Midi. Arg., thallus argillaceus, cum saxo 

 conferruiiiinalus , effusus; apothecia 1/8-1/3 mm. lata orbicularia, 

 immarginala, evolutasubliejni.sphaerico-convexael riigulosa, basi con- 



