NOVA SCOTIAN FUNGI—SOMERS. 247 
bears to Middle Silurian series on the south side of the syncline. 
These quartzites may all be regarded as of Lower Silurian age, 
probably Calciferous, as Maclurea seems to indicate. This would 
leave the Potsdam period for metamorphism, and the Cambrian 
and Archean for formation. In this way I regard the Aurifer- 
ous series as Archeeo-Cambro-Silurian (Lower). 
ArRTICLE II.—Nova Scotian FuncI.—By J. Somers, M. D. 
(Read Dec. 10, 1880.) 
THE following additions to the list of Fungi published in vol. 
V., part 2nd, Transactions of the Institute, 1879-80, have been 
collected during the past season; the greater number are from 
the vicinity of Halifax, the remainder are specimens principally 
Polyporei, kindly sent to me by A. H. McKay, Esq., of Pictou; of 
the latter there are several which I have not yet identified as 
erowing here. Allowing for errors in diagnosis not inseparable 
from the study of a class of vegetables of which we lack a good 
American descriptive text book, we are compelled to depend 
almost solely upon Cook, no mean authority ’tis true, and com- 
prehensive also. Yet one finds many species that depart from 
the characters of those described by Cook under their common 
genera. It will not therefore be surprising that we may find it 
necessary to make corrections in a future revision of the list. 
Order Agaricini. 
Sub-Gen. Amanita. 
1, Agaricus (Amanita) spissus, F7., clammy Amanita, under 
Larch, Willow Park, Sept., 1880. 
Sub-Gen. Tricholoma, F%. 
2. A. (Tricholoma) sejunctus, Sow., N. W. A. woods, Aug. and 
Sept., 1880. 
Sub-Gen. Clitocyhe, Fr. 
3. <A, (Clitocyhe) candicans, Fr., Park woods, Nov. 1880. 
4. A. (Clitocybe) opacus, With is ¢ 
5. A. (Clitocybe) fumosus, P F ‘ 
