35 2 Massee and Salmon*— Researches on 
becoming dull red, wall thin, soft, membranous, composed of rather 
large (10-20 /x wide) irregularly shaped cells; asci obovate or sub- 
pyriform, 80-100 x 22-25 /x, rounded at the apex, narrowed below 
into an evident stalk, 8-spored ; spores inaequilateral, somewhat 
lemon-shaped, 21-25 X 10-11 /*, fuliginous, opaque. 
Hab . — On the dung of Guinea Pig, Kew; Jan. 1901. (Distrib. — - 
E. Greenland, on dung of Reindeer.) 
The above species occurred associated with Pleuroascus Nicholsoni 
(see p. 330). The hairs, forming a tuft round the ostiolum, ar? 
often somewhat swollen at their base (Fig. 23). We have not seen an 
authentic specimen of Rostrup’s species, but the author’s description, 
given below, seems to point to the present plant : ‘ Perithecia minima, 
sphaeroidea, rubella, ostiolo fimbriato, subiculo obsoleto ; asci cylin- 
draceo-clavati, longit. ioo-iio/x, crass. 20 /x; sporae distichae, initio 
hyalinae, dein fuscae, ellipsoideae, long. 20/x, crass, n-12 /x/ 
S. Hulseboschii, Oudem. (Figs. 57-61). 
S. Hulseboschii , Oudem., in Nederl. Kruid-Archief, ser. 2, iv. 523 
(1886); Sacc. Syll. Fung, ix, 949 (1891). 
Perithecia scattered or subgregarious, superficial, J-J mm. in diam., 
yellowish or with a reddish tinge, subglobose with a minute ostiolum, 
which is surrounded by short (about 30 /x long) colourless hairs, wall 
of perithecium soft, thin, composed of rather large, irregularly shaped 
cells, about 15-20 \i wide; asci pyriform, 50-60 x 25 /x, 8-spored, 
evanescent ; spores arranged in two or three rows towards the apex 
of the ascus, lemon-shaped, often inaequilateral, minutely truncate at 
each end, 18-20x9-10^, at first colourless, then pale olivaceous, 
becoming finally fuliginous and opaque, the tip at each end of spore 
remaining pallid for some time. 
Hab . — On Rabbit-dung, Leith Hill, Surrey, England, Mar. 1901. 
(Distrib. — Netherlands, on Rabbit-dung.) 
The spores of the present species are lemon-shaped, and minutely 
truncate at each end. As is noted in Oudeman’s original description, 
the extreme ends of the spore commonly remain subhyaline for some 
time after the rest of the spore has become dark-coloured. 
Melanospora discospora, sp. nov. (Figs. 36-38). 
Peritheciis sparsis rare subgregariis minutis 1 10-130 /x diam. 180- 
200 /x altis subimmersis glabris subglobosis flavicantibus membrana- 
ceis contextu parenchymatico molli tenui e cellulis irregularibus cir- 
citer io/x latis composito rostro breve-cylindraceo recto obtuso 60-80 ^ 
