29 
prominent ; disk gaping, depressed, flat, very cinereo-pruinose ;_peri- 
thecium near the apex fulvo- fuscous or nigricant, in all other parts 
hyaline; spores 4, hyaline, ‘08-"11 x -008- Ol mmn., 16-22 locular, loculi 
always simple. 
Hab.: Brookfield, on bark, Field Naturalists. 
0. pulchra, JM. Thallus cxsio-albid, thin, continuous, at length 
rimose; young ‘Spothecia gyalectoid, emergent, ra iately aperient, 
when evolute 1:5-2 mm., widely gaping. The margin in su 
triangular recurvo-radiant lobes, within subfarinose; disk plane, 
almost attaining the surface of the thallus, black, cesio- -pruinose, 
entire; perithecium olivaceo-fuscous ; hypothecium subbyaline or 
slightly olivaceous; lamina in part hyaline ; asci biseriately 6-8- 
spored ; spores hyaline, ‘033-045 x 005 mm., narrowly fate at 
both ends obtuse, about 14-18-locular. 
Hab.: Goodna, on bark, J. F. Shirley. 
0. diffractella, J. Thallus eiaucsseray albid, moderate, from 
originally continuous and smoot to irregular and very depresso- 
glebose ; glebule pepelvioae and rather ¢ Alea se SUrince: levigate, at 
XK 
i? 8) 
oO 
within ‘8 mm. wide ; ostiola ‘12-2 mm., black; spores 8, hyaline, 
‘015-02 x :006-'008 iim. , fusiform, 6-locular. 
Hab.: ~asaasg Ker, on bark 
iio white stratum when evolute, beneath °3 thick ; abies 8, 
hyaline, 035-04 x ‘008-"01 mm., ovoid- 7 Why 8- -10- locular 
Hab.: — Ker, on bark. 
0. gonios JM. Thallus pra olivaceous, very thin 
length thinly dapiiens plebous glebule at the bas e thalline solid 
apothecia at length hemispherical- phan 1 mm. wide, the back 
gl bose-unequal, + , the vertex not \at all depressed; ostiola ‘2--7 mm. 
. : 
: the upper part (within) at length nigro-fuscous, wanting 
eneath the hymenium ; central column intensely nigro- -Fuscous, smal}, 
thick ; spores "3. biseriate, pretie; ‘028-033 x ‘007-008 mm., at both 
ends rotundate- obtuse, 6-S-loe | 
ab.: Bellenden- ch on ci 
odlusoalbi ‘5-7 mm. wide; thalline protuberances ne thick, 
fee » the vertex terminati ing with an ostiolum from rotundate-puncti- 
nbso to slightly stellate-dehiscent or at length urceolari-angular and 
ne, ssured; the neck of the ostiolum black; perithecium 
f : 
“039 in the centre “evolute in a black column ; spores 8, hyaline, 
oe 938 x 008--009 mm. = aia 8-9-12-locular. 
Hab. ; : Bellenden-Ker, on 
