298 BRITISH DISCOMYCETES. 
covered externally with an excessively subtle white 
pruina; hymenium opaque, often paler; asci elongated, 
very large, broad, opening at the apex by a subumbonate 
operculum; sporidia 32, hyaline, larger than in Rypa- 
robius, elliptic, subacuminate, the young ones filled with 
conspicuous minute drops, and surrounded singly with 
gelatine, the mature ones naked, with one central nucleus, 
27 X 144; paraphyses slender, septate, hyaline, branched 
from the base, enveloped in hyaline gelatine. (Plate IX. 
fig. 56.) 
Ascobolus Pelletieri—Crouan, “ Ann. Se. Nat.,” 1857, 
vol. vii. p. 178, & iv. a. fi 1-4; “Flo. Finn.,” p. 56; 
Coemans, “Not. Ascob. Belg,” p. 15; “Bull. Soc. Belg.,” 
i. p. 88; Kickx., “Crypt. Flan.” i. p. 477; Pat. p. 74, 
f. 172. Thecotheus Pelletieri—Boud., “ Ascob.,” p. 46, 
t.9, f. 22; Phil. and Plow., “ Grevillea,” x. p. 69. 
On horse-dung. It is also found on dung of cows, 
sheep, and dogs. 
Cups 4 to 1 line broad. Easily recognized by the 
large asci and numerous sporidia. 
Name—After Captain Pelletier. ‘ 
Grown under glass, Bristol! (Mr. C. Bucknall). Scar- 
borough ! (Mr. Massee). 
Genus V.—Ryparosius. Boud. 
Very minute, hardly visible to the naked eye, waxy, 
marginate, sessile; hymenium plane; punctate from the 
prominent asci, when dry margin inflexed, rotundate; 
asci minute, but proportionately very broad, often ovate, 
scarcely attenuated at the base; always polysporus, 
opening by a large convex operculum, scarcely rising 
above the mature disc; sporidia very minute, hya- 
line, very numerous, never granulose within, nucleus 
hardly visible, when mature aggregated into an oblon 
fy By but easily separable (Boudier, J. ¢.). (Plate IX. 
ig. 57. 
Distinguished from the preceding genus by the smaller 
