162 Canadian Record of Science. 
genera and species of Pteraspidian fishes, and a near relation 
to Cyathaspis shown. Remarks on the geological horizon 
of the species, based on the studies of Billings, Honeyman 
and others, are added. This species, and the Paleaspis of 
Claypole, found in Pennsylvania, are thought to be the 
oldest known forms of the family. 
“‘ Besides the description of this fish, the paper contains 
that of three crustaceans. One of these is a small Ceratio- 
caris (C. pusillus) from the same beds as the fish, viz., Divi- 
sion 2 of the Silurian series of New Brunswick. It is there- 
fore one of the oldest species of this genus, and is remark- 
able for its narrow carapace and long rostrum. 
“A nother form described is a crustacean (Bunodella horrida) 
of the sub-class Synziphosura, allied to Bunodes, but with a 
small carapace and longer body. This also was found in the 
same beds as the fish plates. 
“The third crustacean is a small species (Hrypterella ornata) 
possessing features which make it difficult to say whether it 
should be referred to the Kuripterida or Synziphosura. 
This species is from the plant beds of the Lower Devonian 
series at St. John, N.B.” 
Notes on the Gold-bearing Veins of Nova Scotia.* 
By E. Grpin, Jr, F.G.S. 
“In this paper, the writer, after referring to the general 
geological and mining accounts of the Nova Scotia gold 
fields, given by him in papers read before the American 
Institute of Mining Engineers, etc., drew attention to the 
conditions of folding in the district under consideration 
The veins occur in the anticlinal folds, and correspond in 
size, extent, and depth to the facilities afforded by the 
varying conditions of folding and pressure. Thus, veins are 
met thinning out in depth, and disappearing laterally, to be 
succeeded by other veins not necessarily in the same plane, 
etc. 
“The relation of the veins to the strata are those of con- 
