PLATE XrX. 
the north of Caernarvonshire : the fishermen in those parts knot*" 
it by the name of the Miller's Thumb, Deilliom 
The body, like that of the Whiting Pout, is deep, and the sides 
compressed j the colour along the back olive, and the sides beauti- 
fully glossed with gold. There is also a loose membrane over the 
eye, which the creature can blow up at pleasure like a bladder. In 
the first dorsal fin we counted thirteen rays, in the second twenty, 
and in the third nineteen : pectoral fins sixteen : ventral five : first 
anal twenty-three, second anal twenty : tail thirty-three. 
