30 THE ESSEX NATURALIST.
Lecanora murorum, Ach. is now Placodium murorum,
D.C.
Lecanora vitellina, Ach. is now Candelariella vitellina,
Mull-Arg.
Lecanora laciniosa, My. is now Candelaria concolor,
Wain.
Lecanora aurantiaca, Nyl. is now Placodium aurantiacum,
Hepp.
Do. do. subsp. erythrella, Nyl. is now Placodium
aurantiacum, var. flavovirescens, Hepp.
Lecanora cerina, Ach. is now Placodium cerinum, Hepp.
Lecanora exigua, Nyl. is now Rinodina exigua, S. F. Gray.
Lecanora subfusca, var. campestris, Nyl. is now Lecanora
campestris, B. de Lesd.
Lecanora allophana, Nyl. is now Lecanora subfusca, Ach.
var. allophana, Ach.
Lecanora rugosa, subsp. chlarona, Nyl. is now Lecanora
subfusca, Ach., var. chlarona, Ach.
Lecanora albella, Ach. is now Lecanora pallida, Schaer.
Lecanora conizaeoides, Nyl. is now Lecanora conizaea,
Nyl., var. conizaeoides, A. L. Sm.
Pertusaria amara, Nyl. is now Pertusaria faginea, Leight.
Pertusaria communis, D.C. is now Pertusaria pertusa,
Dalla Torre and Sarnth.
Urceolaria scruposa, Ach. is now Diploschistes scruposus,
Norm.
Taking into account these modifications, our total record
of lichens amounts to 127 forms.
We take this opportunity of correcting one or two errata
in our earlier Lists, as follow:—
Peltigera canina, Hoffm. should be P. polydactyla, Hoffm.
Rhizocarpon petraeum, Massal, should be R. confervoides,
D.C.
Physcia lychnea, Nyl.: for "fertile" read "sterile."