23 
emergent, flat, finely marginate or immarginate, when young 
fuscous, usually blackish, nude, not pale when moist but sli aily 
greenish-black ; ieee above leek- -green, elsewhere hyaline; spores 8 
ellipsoid, 10- 12 x p. 
Hab.: On ay iPuubbday Island, Knight, No. 284, 286, pro p. 
L. (s. Lecidella) nesophila, Dull. Arg. Thallus white, 
thin, rimose- -interrupted, flattish or as if slightly granose-unequal ; 
apothecia: to ‘5 mm., sessile, when young flat and thinly a. 
gute concave, nigro- CHSIUS ; eitheci and other raise 
us; Spores 8, ellipsoid, 10-11 x 6 p. 
Hab.: On rocks, Discnlay Island, Knight, No, 237. 
BLASTENIA. 
Mass. Syst. Lich. Blast. p. 13. 
B. ochroleuca, Mull. Arg. Thallus ochroleuco-albid, thin, con- 
tinuous, here and there delicately rimulose ; hypothal allus black ; 
Tab, On rocks, Thursday Island, Knight, No. 339. 
BUELLIA. 
Mass. Ric. p. 80; Mull. Arg. Lich. Gen. p. 63. 
“ amblygona, Mull. ada, Thailus whitish diffracto- pean ; 
owing black between the areole, thick ; -areole sabre 
angular, irregular, slightly convex, at the ma rgin obtuse, often fissure 
or diftracto -divided, adorned with 2-5 black spots ; apothecia small, 1 
3 Wide, sessile, flat, and thinly margined, black and nude ; 
a sled and hypothecium brown, spores 2-seriate, 8, 12 x 6 s 
“= oa rocks, Thursday Island, Knight. ere 
3 rosporoides, Mull. Arg. Thallus white-pallid, moderate, 
| in difracto-verrucoce’ verruce bas young flat and subcontiguous, 
it en ag large aud turgid, much smaller than the apothecia; 
: © ost to 1 mm., sessile, flat, and thinly mar argined, 
Figen inate, opaque, black, or the back of t 
MaBs5 cides and hypothecium se ees —_— 
b. . ag Thursday Island, Knight, Nos. 206, 210, 
