A yew Fungus from the Coal Mca$ures. — lhr.tr. 289 
A NEW FUNGUS FROM THE COAL MEASURES. 
By H. Hi:rzer. Keren, 0. 
iPlate mii.i 
Genus: Dactylopokus, Herzer. 
DactyloporiiM nrrliseu* Her/j r. 
A remarkable advance in our knowledge of the ( Carboniferous 
Mora is made in the discovery of a fungus characterized l>y a 
well-developed trunk, pi lens and sporiferous arrangement, dis- 
tinguishing itself from those thai wen- rhizoid or epiphytal 
in habitat, infesting bark and leaves of trees. It is a fungus 
of unusual size, generically allied to Polyporua as to its spo- 
riferous tidier, and again to Agaricus by its pileus and trunk 
— a somewhat comprehensive type and a Goliath among its 
lilliputian relatives. Although enclosed within a lump of 
pure, bituminous, soft coal, none of the partshave undergone 
the least carbonization. The whole mass is of dirty brownish- 
yellow, mineral substance, chalky and brittle, like rotten bone. 
The pileus has experienced a Literal crushing, so that its ur- 
banization is disarranged and has become to some extent a 
mingled mass. The trunk is underlying the pileus and is 
separated from it by one half inch coal, and their connection 
i- broken; also it> basal part is wanting, left with nearly one- 
half of the pileus in another chunk that could not he found, 
so that the whole length of the growth cannot be ascertained. 
The trunk, No. 1. plate xiii. is compressed to one-half of its 
thickness ( more flattened than here given ). is S in. long, longi- 
tudinally ribbed, with smooth exterior, easily separating from 
the coal; interiorly marked by large ducts. No. 2. little exag- 
gerated in figure, the walls of which are of a rusty-brown 
color, causing a columnar structure. The pileus. No. 3, trans- 
verse section, presents a somewhat homogeneous mass with 
lamellular parts. No. 4 is evidently the hard upper crust of 
the pileus. No. ."> presents isolated bundles of sporiferous 
tubes: two of them are lying across the pileus. six of them be- 
ing imbedded in the mass ; they are dactyl i form, cylindrical and 
smoothly enclosed as with a phosphatic coating. The here 
enlarged tubes are compressed and still so well preserved as to 
show each one as distinct as in a recent Polyporus, even a loose 
filamentous mural texture for adherence to each other. On 
