146 NOTES ON MYCETOZOA. 
Puysarum Guosputirerum Pers. Mr. Robert E. Fries gathered 
this species near Upsala, in August, 1898. It is the finest Euro- 
pean example we have seen. The sporangia are white and rugose ; 
the stalks creamy white, with a short conical columella; the capil- 
litium rigid and persistent, with small roundéd lime-kno 
P. murinum List. This species was found in perfect ee 
and in great abundance at Llan-y-Mawddwy in September, 1898, 
on mossy fir stumps. Thes aaunia were pale mouse-brown with 
brown stalks; the sporangium-walls had often fallen away, and lay 
in cup-shap ed fragments on the moss; the persistent capillitium 
retained th globular form; the colour of the lime-knots differs 
in the growths on different stumps; in some they are pale buil, 
and in others dark brown. This species agrees in all its characters 
with P. globuliferum except in the colour of the lime ; the con 
stancy of the brown colour, however, from different parts of the 
world, appears to establish a specific distinction. 
P. crrrinum Schum. In July, 1898, we received an extensive 
growth of this vee on meet are by Mr. G. H. Fox, at 
sc ‘This species, again, esponds with P. Oe de um and 
ad tee: Mr. Fries neem this form on dead leaves 
near Upsala ih in th Ostobee, 1897, and again in abundance at the same 
spot in September, 1898. The sporangia are subglobose, ro 
sometimes shading into orange at the base, rugose with t ick 
to those in Res? 8 type of B. variabile, and are decidedly darker than 
those in P. mellewm Mass., as represented by our specimens from 
the United States and the ‘West Indies. Were it not for the dark 
spores and highly calcareous sporangium-wall, the Upsala gather- 
ings would naturally be placed under P. mellewm, recent gatherings 
of which show considerable variation in the colour of the stalks. 
Indeed, after a careful examination of our series last autumn wit 
Dr. Sturgis, of New Haven, U.S, A. we — whether sufficient 
the two. Although P. variabile and P. melleum are allied to P. 
citrinum, they differ essentially in the large angular lime- knots and 
weak hyaline threads of the capillitium 
P. compressum Alb. & Schw. var. 3. Mr. Saunders seit 
this form in November, 1898, on dead leaves near Bedford. We 
have also a very similar growth obtained by Mr. Fries near Upsala, 
