150 Riwpie: THe LicneENs or BERMUDA 
original figure (Essai sur les Cryptogames pl.5,f.4. 1824). In Nos. 
2110, 1210, 1285, the thallus is glaucescent instead of olivaceous. 
In some of the specimens the spores are somewhat wider than the 
figures given by Mueller-Argau, but there is BOtHnS else to dis- 
tinguish these from the Boor form. 
23. OPEGRAPHA CHEVALIERI var. incarnata Riddle, var. nov. 
Thallus leenaies ten ee roseo-suffusus vel tandem pal- 
lescens et argillac 
On calcareous a without dofnive station, collected by Pro- 
fessor W. G. Farlow, i880. : 
Type-specimen in the Cryptogamic Herbarium of Harvard 
University. 
24. Opegrapha ophites Tuck. in herb., sp. nov. 
Thallus epilithicus crustaceus indeterminatus tenuissimus, 
atro-griseus et fuligineo tinctus, aut demum evanescens. Lirellae 
sat graciles elongatae, 1.0-2.5 mm. long, 0.15 mm. latit., sat 
flexuosae nigrae nitidiusculae simplices aut rariore furcatae 
laevigatae aut parce transversim diffractae, disco rimiformi. 
Sporae incolores, 6-8-loculares, circa 22 X 7 u. 
On calcareous rocks, without definite station, collected by 
Professor W. G. Farlow, 1880. 
Type-specimen in the Cryptogamic Herbarium of Harvard 
University. 
25. OPEGRAPHA VULGATA Ach. 
On Eugenia, without definite station, Brown, Britton & Seaver, 
1288. 
26. GRAPHIS AFZELIT Ach. 
Without definite station, Challenger Expedition. 
27. Graputs LINEOLA Ach. 
On Melia, hillsides near Flatts, E. G. B. ei 
28. GRAPHIS PAVONIANA Fée. 
On Ilex, Devonshire Marsh, E. G. B. 3774. 
