[LAMBE] GANOID FISHES FROM NEAR BANFF, ALBERTA 41 
The pelvic fin has jointed rays of a tenuity in keeping with its 
small size. In this pair of fins the base is short and the distal end 
appears to have been rounded in outline. 
In both the dorsal and anal fins the rays are stout proximally 
and well spaced. In the anal fin they bifurcate a short distance from 
the base and are jointed, but in the dorsal one evidence of both these 
features is wanting. In both fins the base is long and the shape 
seems to have been somewhat triangular. A greater length of the rays 
is preserved in the anal than in the dorsal fin and for this reason 
the triangular outline of the former can be spoken of with greater 
assurance; in both the full length of the rays is suggested only by their 
size where they are broken off in the specimen. A series of short 
fin-supports is*present along the base of both these fins. As these 
endoskeletal elements lack clear definition it is difficult to ascertain 
whether they correspond in number or not with the dermal fin-rays 
they support. 
The anterior end of the row of dorsal fin-supports is thought to 
be seen in the specimen, indicating that the dorsal was of nearly the 
same size as the anal fin and did not extend far forward on the back 
as for instance in the Carboniferous genus Eurynotus of Britain and 
Belgium. 
Fulcra are present in the pectoral and pelvic fins, small and deli- 
cate in the latter, larger and more robust in the former. Whether 
they occur in the anal and dorsal fins is not known as the anterior 
border of these fins is not present in the specimen. 
The scales of the upper part of the flank toward the front are 
the largest and are much higher than long. In the exposed surface 
of these scales the height to length is in the proportion of about 4 
to 6-5, plate II, figure 4. In passing downward and backward in 
the fish there is a gradual diminution in scale-height with a retention 
of about the same length throughout to near the tail. The anterior 
ventral scales are the smallest, with a minimum of height; they are 
three times as long as high, plate II, figure 5. The scales of the mid- 
length of the flank have their height and length about equal, plate 
II, figure 6. Those nearer the tail, in the area between the dorsal 
and anal fins, are nearly twice as long as high, plate II, figure 8. 
Throughout, the overlap of the scales is slight; with the reduction 
in their height there is a corresponding diminution in the size of the 
articulating peg. 
The hinder part of the outer scale-surface is ornamented with 
fine ridges, about ten in a space of 3 mm. directed obliquely downward 
and backward, and delicately notching the back edge of the scale. 
The style of ornamentation and the size of the ridges remain the same 
