40 
Mycologia 
Cribraria macrocarpa Schrad. Punta Arenas, Chile, March, 
1906. A scanty gathering in poor condition. 
Cribraria splendens (Schrad.) Pers. Punta Arenas, Chile, 
February, 1906. 
Cribraria pyriform is Schrad. Punta Arenas, Chile, March, 
1906. 
Dictydium cancellatum (Batsch) Macbr. Punta Arenas, 
Chile, March, 1906. The single gathering of this common species 
included in this collection is a remarkable one. The sixty or 
more sporangia all show a very delicate, persistent, membranous 
wall, imparting to the sporangia a certain degree of iridescence. 
In most cases the wall is not thickened below to form a cup, but 
in others the cup is one-third to one-half the height of the sporan- 
gium and, in such cases, is marked with a network composed of 
lines of plasmodic gramdes, which network is continued in the 
upper part of the sporangium precisely as in the genus Cribraria. 
In fact, such sporangia present a remarkable resemblance to C. 
pyriformis. When the cup is absent, its place is taken by strong 
ribs, occasionally connected by delicate cross threads as in typical 
Dictydium, but usually anastomosing at acute angles below and 
forming a typical Cribraria net above, either with or without 
slightly thickened nodes. Such sporangia show a very near ap- 
proach to Cribraria splendens. Only here and there in the gath- 
ering is to be found a sporangium the structure of which is 
throughout that of normal Dictydium. 
Tubifera ferruginosa (Batsch) Gmel. Punta Arenas, Chile, 
March, 1906. 
Dictydiaethalium flumbeum (Schum.) Rost. Corral, Chile, 
December, 1905. This is the gathering referred to by Miss Lister 
(Mon. Mycet., p. 196). The specimen is badly weathered, being 
detached entirely from the substratum, and showing only the per- 
sistent apices and characteristic lateral portions of the sporangia. 
The latter are peculiar in being unusually coarse (8-10 ju, diam.) ; 
their length indicates that the aethalium measured 1.5 mm. or 
more in thickness ; otherwise the specimen appears to be quite 
normal. 
Reticularia Lycoferdon Bull. Corral, Chile, December, 1905 ; 
Punta Arenas, Chile, 1906. 
