162 Recent Discoveries of Fossil Fishes in  |February, 
pear to be sufficiently alike in both genera. The jaws of Eus- 
thenopteron, like those of Tristichopterus, are each armed with an 
outer row of small teeth, and an inner row of large ones, but the 
teeth of Tristichopterus are simply conical and circular in trans- 
verse section, whereas those of Eusthenopteron are flattened coni- 
cal with lateral cutting edges. The jaw of Eusthenopteron is 
remarkably like that of the Asterolepis of Hugh Miller, but not 
of Eichwald, as figured in the “ Footprints.” 
Glyptolepis, Compare G. microlepidotus Ag.—A single badly 
preserved example of a species of Glyptolepis which resembles 
the G. microlepidotus of Agassiz in the small size of its scales. 
These scales, which are for the most part exfoliated, and 
which in no case show the sculpture characteristic of the genus, 
average less than two lines in diameter. The fins of the side ex- 
posed to view are tolerably well defined, and the outline of one of 
the slender, elongated and acute, lobate pectorals. is somewhat 
clearly shown. The specimen agrees perfectly with Huxley's 
restoration of Glyptolepis, in the’ shape and position of its fins, and 
in the contour of its tail. 
~ Glyptolepis. Compare G. leptopterus Ag—A second species of 
ee ablapis, apparently of the type of G. /eptopterus, appears to be 
indicated in Mr. Foord’s 1880 collections by two or three large 
isolated scales. These scales, which are nearly an inch in length, 
are ornamented with the wavy costz and semilunar or crescentic 
area of backwardly directed points peculiar to the genus. 
Cheirolepis canadensis —Four fine and well preserved specimens 
of a large species of Cheirolepis, nearly, related to the C mmk 
mingie of Agassiz, of which it may prove to be only a : 
variety. According to Hugh Miller, the large pectorals of E | 
cummingi@ “ almost encroach upon the ventrals, and the ventra 
upon the anal,” but this is by no means the case with the C ye H 
densis. In the latter species, or variety, the ventra] fins att 
rated from the pectorals by a short interval. The anal fn i 
placed much farther forwards than the dorsal, and is sé 
from the ventrals by a space slightly exceeding in length thè 
height of the body at the commencement of the anal. 
The analogies between the fossil fauna of the Upper Devo! 
oe at Scaumenac, and that of the old red sandstone of $ 
land and Russia are very striking. With the exception of I 
