ae 
1883. ] the Devonian Rocks of Canada. 163 
thenopteron, all the genera yet found at Scaumenac, are those 
with which the readers of Hugh Miller will be familiar. Of the 
seven genera of fishes found so far at Scaumenac, six occur also 
in Europe, and of the eight species collected by Mr. Foord, proba- 
bly one-half will yet prove to be mere varietal forms of European 
species. The Prerichthys canadensis is most likely the same as the 
Bothriolepis ornata of Russia and Scotland; the Acanthodes ap- 
pears to be referable to the A. mitchelli of Egerton; one of the 
species of Glyptolepis may be identical with the G. microlepidotus 
of Agassiz and the Chetvolepis canadensis is probably a variety of 
the C. cummingie. 
The existence of fossil plants, as well as of fish remains, in the 
shales and sandstones of Scaumenac bay was noticed by Dr. 
Gesner in 1842, and from these rocks Mr, Foord also obtained a 
series of specimens of four species of ferns which have recently 
been described by Principal Dawson. These Devonian deposits 
at Scaumenac may have been of fresh water or estuarine origin; 
for no traces of any marine invertebrata have yet been detected in 
them, and the fossil fishes which they contain are invariably found 
associated with land plants. 
On the south bank of the Restigouche, about half a mile above 
Campbellton, another series of fish-bearing strata was discovered 
by Mr. Ells in 1871. These deposits have also been carefully ex- 
plored by Mr. Foord, and a preliminary description of the species 
collected by him has been published in Vol. x, No. 2, of the 
Canadian Naturalist. At this locality the remains: of fishes 
Occur in brecciated limestones of Lower Devonian age, which 
latter are much disturbed by trappean outbursts and overflows. 
The specimens, though sometimes well preserved, are generally 
fragmentary, and the species recognized so far are as follows: 
_ Coccosteus acadicus—Cranial shields and detached post-dorsome- 
dian, ventromedian and preventrolateral plates of a species of Coc- 
Castes whose characters appear to be intermediate between those 
of the C. cuspidatus and C. decipiens of Agassiz. The dorso- 
‘Median plate of C. acadicus is precisely like that of C. cuspidatus, 
but the superficial grooves on the cranial shields of the Campbell- 
n. specimens correspond perfectly with those represented in 
Hugh Miller's diagram of the head shield of C. decipiens. It is 
not at all unlikely that C. decipiens, C. cuspidatus and C. acadicus ` 
