S04: 
AKGENTINE. 
and anal closer together. He connts the fin rays — of the dorsal 
nine, pectoral seventeen, ventral eight, anal twenty, where Mr. 
Yarrell makes them fifteen; the tail eighteen. Of the number 
of characteristic dots, between the hyoid bone and pectoral fin 
five; the upper row on the belly from the pectoral fin to the 
spot over the ventrals nine; on the lower line of the belly, 
from a spot perpendicularly beneath the hindmost border of 
the eye to the base of the ventrals twelve; and from thence to 
the anal six, of which the two first are directed downward 
and backward ; the four hindmost forming an arch from a little 
above the second to the commencement of the anal fin. One 
large one, in a line with the upper row of the belly, is placed 
slightly before, but above the commencement of the anal fin. 
Between the beginning of the anal and base of the tail twenty- 
four; but between the eighth and ninth from the tail one spot 
appears to have been lost. 
Mr. Edward’s description of an example found by him in 
February, at Banff, and of three others since found near the 
same spot, is thus given in the “Zoologist:” — The length nearly 
two inches, the greatest depth almost half an inch. Colour of 
the back dark glossy brown, marked along its whole length 
with zigzag lines of a lighter shade, one being on each side of 
the dorsal ridge; sides like brightest polished silver with metallic 
lustre; belly slate blue; tail deeply forked, greyish white, with 
a dark streak across near the base. On the upper lip two 
kidney-shaped streaks, one on each side, bluish green; similar 
marks but round on the lower lip, giving the mouth when 
closed- a dark appearance. From the under side of the mouth 
three rows on each side of little roundish dots of beautiful light 
green; the first passing along the side of the head ends beneath, 
but on a line with a back part of the eye; the second lower 
down, ends a little beyond the pectoral fin; the other, one on 
each side, stretches along the belly, with a slight interruption 
at the vent, to the tail, being smaller and closer as they proceed 
backwards. The second dorsal fin quite visible and rounded. 
There appears to be a near similarity between the fish thus 
described by Mr. Edward and our own; but that of Dr. Clark 
seems different; and the difi’erences between them are the rather 
to be noticed, since, according to Dr. Gunther, the specific 
characters of several are not readily noticed. It is thus that 
