246 FOLIICOLOUS SPHJERLE, 
Outl. p. 401; Cooke, Index, n. 2386 ; Johnst. Fl. Berw. ii. p. 129. 
—On fallen leaves, very common. (PI. XLIX. Fig. 6 
Var. a. centigrana. Perithecia scattered.— On dead leaves of Cas- 
tanea vesca. 
Var. B. equalis. Perithecia cespitose. Sporidia having both cells 
a eee and equal. (Pl. XLIX. Fig. 7.) 
RELLA OBLIVIA, x. sp. Peritheciis semi-innatis, nigris, 
Laon maculeformibus. Ascis cylindricis, Sporidiis biseriatis, 
curvatis, uniseptatis, infra cellula angustissima est, pallido-flavidis.— 
Perithecia semi-innate, black, closely agglomerated in small but dense 
maeulzform spots consisting of from ten to twenty individuals. Asci 
cylindrical. Sporidia biseriate, curved, uniseptate, the lower cell the 
narrowest, slightly yellow, *0125—015 mm. (:0005— 0006 in.) long.— 
On the under surface of dead chestnut leaves, mixed with S. macule- 
Jormis. Darenth Wood, Kent. (Pl. XLIX. Fig. 8 
3. SPILERELLA ARCANA, m. sp. Hypophylla. Peritheciis minutis, 
subinnatis, agglomeratis, sparsisve, nitidis, atris. Ascis late fusiformi- 
bus. Sporidiis congestis, linearibus, rectis, uniseptatis.—Perithecia 
minute, subinnate, either collected in ** maeulzeform ” spots or scattered, 
black and shining. Asci broadly fusiform. Sporidia crowded, linear, 
straight, obtuse at the extremities, uniseptate, each cell containing two 
small sporules or nuclei, ‘0125 mm. (:0005 in.) long.—Spheria macu- 
leformis on Castanea, Fckl. Fung. Rhen. n. 817.—On dead leaves of 
Castanea vesca. Darenth Wood, Kent. Intermixed with s. oblivia 
and S. maculeformis. (Pl. L. Fig. 13.) 
4. SPHHRELLA SIMULANS, z. sp.  Hypophylla.  Peritheciis in- 
nato-prominulis, globosis, niei. nigris, in maculam nigram ineequa- 
lem conglomeratis.  Ascis cylindricis, rectis vel flexuosis. Sporidiis 
elongatis, curvulis, obtusis, confertis, uniseptatis, hyalinis.—Perithecia 
arranged in groups on the under surface, in a similar manner to 
_ S. maculeformis, the habit of which it seems to counterfeit, and is 
often found on the same leaf. Asci cylindrical, containing the large 
sausage-shaped uniseptate sporidia, in which it differs materially from 
any of its allies. Length of the sporidia -02 mm. (or ‘0008 in.)— On 
dead Oak leaves. Highgate, 1866. (Pl. XLIX. Fig. 12.) 
5. SPHIERELLA PUNCTIFORMI Scattere Perithecia € 
punctiform, even, rather shining, black, slightly prominent, umbilicat 
x collapsion. Asci minute, clavate. Sporidia uniseriate or weinen 
