56 
Mycologia 
neiro, while a few came from Argentina. Only one desert form 
was found, a species of Tylostoma, represented by a single sporo- 
phore. A few of the forest forms are listed below ; 
Auricularia Auricula, Chlorospleniuni aeruginosum, Clado- 
derris dendritica, Coriolopsis occidentalis, Coriolus haedinns, C. 
membranaceus, C. pinsitits, C. sector, Daedalea amanitoides, Elf- 
vingia tornata, Elfvingiella fasci-ata, Favolus variegatus, Fomi- 
tella supina, Hapalopilus gilvus, Hexagona daedalea, Lentinus 
crinitus, L. strigosus, Panaeolus campanulatus, Pogonomyces 
hydnoides, Psathyrella disseminata, Pycnoporus sanguineus, Re- 
supinatus subbarb at ulus, Rigidoporus surinamensis, Schizophyl- 
Itis alneus, Simblum sphaerocephalum? , Stereum bicolor, and 6". 
lobatum. 
A New Family of Hymenomycetes 
The genus Porothelium, erected by Fries in i8i8 on Boletus 
fimbriatus Pers. and one other species, is out of place among the 
Polyporaceae because of its spiny hymenium and cannot properly 
be included in the Hydnaceae because its spines are hollow and 
bear spores on their innec surface. The new family Porothe- 
liaceae is therefore proposed to include hymenomycetes having 
the hymenium composed of tubular teeth, the context being simi- 
lar in general to that found in the two related families, the Poly- 
poraceae and the Hydnaceae. The name of the genus on which 
this family is based was originally written Porotheleum (Fries, 
Obs. Myc. 2: 272. 1818), but was soon afterwards changed to 
the form now in current use. 
W. A. Murrill. 
A New Genus of Resupinate Polypores 
Xanthoporia gen. nov. 
Hymenophore annual, epixylous, resupinate ; subiculum mem- 
branous, dirty-white ; tubes long, angular, thin-walled, at first 
whitish, soon colored by the spores, which are yellow, smooth, 
ovoid, copious ; spines few, at first conic, then elongate. 
Type species : Mucronoporus Andersoni Ellis & Ev. 
