i8 NOVA SCOTIAN GEOLOGY—HONEYMAN, 
Scotian. My own investigations and conclusions regarding the 
Geology ef Kings and Annapolis in connection with the dis- 
eoveries of Mr. Fletcher, of the Geological Survey of Canada, and 
the Rev. D. Sutherland in Cape Breton, just noticed, have led me 
to suspect that the specimen after all is Nova Scotian, and that 
possibly it belongs to Kings County, and is indicative of the ex- 
istence of rocks of the Potsdam formatiun in this region. An 
examination of the specimen seems to indicate; Ist. That it was 
not found in situ but was a section of a boulder. 2nd. That it 
came from a region where granites or gnessoid rocks exist. 
The side of the specimen with fewest fossils is rather micaceous. 
In this it differs from the Mira specimen. It is also less hardened, 
the Mira specimen being subcrystalline. 
The Lingulellae of both are identical, even the proportions are 
nearly the same. The Lingulellae of the Webster specimen 
measure from % to % of an inch. Their forms are generally 
acuminate. 
A New TRILOBITE. 
Asaphus ditmarsiae (N. Sp.) 
The specimen is a pygidium. Width 5.8 inches; the length 
about 5.4 inches. It is semi-oval and gibbous. 
The mesial lobe is rounded and tapering. It is fragmentary 
and partly indistinct. Its apex is semi-oval. 4 inches of the 
lobe remains. At the top it is two inches wide ; 3} inches from 
the top the width is 14 inches; there is one almost entire ridge 
at the top and two parts succeeding, having portions of two in- 
termediate furrows, the apical part is in length 1? inches. 
Side lobes. The left is lengthened one inch by distortion. 
The right appears to be unchanged. Each lobe has 8 ribs with 
deep intermediate furrows. The ribs when regular are strong 
and rounded, and extend the whole width of the lobes as far as 
the margin. The upper one of the left lobe is bevelled, and 
has a flat plewron of the thorax attached, its surface is also 
granulated. This lobe has a short and narrow supplementary 
rib next the apex, the corresponding one is obscure. On the right 
lobe four of the ribs are widened and flattened. A smooth and 
slightly convex margin, 4-10 of an inch in width, is round the left 
