64 DR. W. NYLANDER AND THE REV. J. M. CROMBIE ON 
longs, longit. 0008-0011 millim., crassit. 0'004 millim. ; para- 
physes gracilescentes ; epithecium inspersum. Iodo gelatina hy- 
menialis cerulescens (cerulescentia subpersistente).— Videtur 
species ex affinitate Lecanore argopholis. Thallus K flavescens. 
On rocks near waterfall, Ninghai. Very sparingly, fide Maingay. 
20. LECANORA CINEREA (Pers.). On rocks. Hills near Ninghai. 
A decolorate state. 
Tribe LECIDEFI. 
21. LrcrpEA TRACHONOPSIS, Nyl., sp. n. Thallus cinerascens 
tenuis inequalis rimoso-diffractulus ; apothecia nigra adnata 
convexula immarginata (latit. 03-05 millim.), variantia mar- 
ginata, intus concoloria; spore 8næ incolores oblong 1-3- 
septate, longit. 0:009-0'015 millim., crassit. 0:003 millim. ; 
paraphyses gracilescentes ; epithecium vix vel vage et hypothe- 
cium crassum nigrescentia vel cerulescenti-nigrescentia. lodo 
gelatina hymenialis ezrulescens, cerulescentia persistente.— 
Species locum habens, ut videtur, prope Lecideam trachonam 
(Flot.). Hypothecium et epithecium acido nitrico rosello- 
tincta. Spermatia arcuata, longit. 0016-0018 millim., crassit. 
0°0005 millim., quod recedit a L. trachona. 
On damp bricks. Shanghai. 
22. LECIDEA TRITULA, Wyl., sp. n. Thallus albido-cinerascens 
tenuissimus vel evanescens; apothecia nigra plana margina- 
tula minuta (latit. 0-25 millim.), intus concoloria; spore 8næ 
incolores ellipsoidez simplices, longit. 0:010-0:012 millim., 
crassit. 0'006 millim.; paraphyses mediocres; epithecium et 
hypothecium fuscescentia. Iodo gelatina hymenialis cerules- 
cens, dein violaceo-fulvescens (apice thecarum obscurius tincta). 
—Species versus Lecideam mediocriculam disponenda. Epithe- 
cium obscurius fuscescens quam hypothecium tenue (quod sepe 
solum luteo-fuscescens). 
On the bark of trees. Near Shanghai. 
23. LECIDEA sUBAROMATICA, Vyl.,sp.n. Thallus albidus, fere 
mediocris (crassit. circiter 0°5 millim.) inequalis, rimoso-dif- 
fractus; apothecia nigra planiuseula subimmarginata, intus 
concoloria; spore 8næ incolores oblonge vel oblongo-bacil- 
lares, 3-septatz, longit. 0'018-0:024 millim., crassit. 0:004 
millim. ; paraphyses gracilescentes ; epithecium nigrescens ; hy- 
pothecium fuscum (vel superius rufescens). Iodo gelatina hyme- 
