62 
Massee and Salmon. — Researches on 
A. nigricans, van Tiegh. 
Hab. — In great profusion on Ostrich-dung, Kew, June, 1901. 
Arachniotus citrintis, sp. nov. (Figs. 86-88). 
Glomerulis gregariis subglobosis pulvinatis albidis dein laete citrinis 
.5-1 mm. diam., hyphis irregulariter ramosis septatis laevibus 3 /x 
crassis flavidis laxe intricatis; ascis subglobosis congestis 8-10 /x 
diam., octosporis, mox diffluentibus; sporis ovatis vel subglobosis 
leniter compressis 4-5 x 2-5~3*5 n flavidis laevibus. 
In fimo Macropodis gigantei (Kangaroo), Kew, Mar. 1901. 
Tufts at first white, soon changing to a clear deep lemon-yellow. 
The hyphae are very slender, and remain permanently thin-walled. 
The species appears to be most closely allied to A. aureus , Schroet., 
from which it differs more especially in the smooth — not warted — 
spores and the absence of spirally wound hyphae. The colour also of 
the present species is lemon-yellow, not golden-yellow as in A . aureus. 
A. candidus, Schroet. (Figs, n, 12). 
Gymnoascus candidus , Eidam, 1886 (fide Schroeter). 
Arachniotus candidus , Schroet., in Cohn’s Krypt.-Fl. Schles. Bd. iii, 
Halfte 2, 210 (1893) ; Sacc. Syll. Fung, xi, 438 (1895). 
Tufts roundish, gregarious, up to 1 mill, in diam., sometimes 
becoming confluent, forming persistently snow-white downy patches ; 
hyphae irregularly branched, scanty, thin-walled, smooth, delicate; 
asci minute, densely crowded into a snow-white mass,* globose, 5-6 /x 
diam., 8-spored, evanescent ; spores broadly ellipsoidal, conglobate, 
smooth, colourless, 3-3-5 X 2-5 /x. 
Hab . — On an old nest of a Wild-bee ( Bombus sp.), Kew, Feb. 1901 ; 
and on the dung of Common Roe ( Capreolus capraea), Kew, Mar. 
1901. (Distrib. — Germany, on dung and rotting animal and vegetable 
substances.) 
Distinguished among the species of the genus by remaining per- 
sistently snow-white. The minute spores remain for a long time 
conglobate in little balls of eight. 
A. ruber (van Tiegh.), Schroet. 
Hab. — On Cats’ dung, Aburi, Gold Coast, Africa (W. H. Johnston, 
1901). 
An interesting occurrence, as the species has not hitherto been 
known out of Europe. The patches formed by this species are at 
first pale yellow, but soon turn to orange, and finally become dark 
reddish-orange. 
