164 SALMONID.E. 



(which was taken from Pennant's,) differs very materially 

 about the head and tail, although it resembles it in the form 

 of the body, I have sent an exact figure of my own specimen, 

 to show the precise form of the bones of the opercula and 

 sides of the head, together with a full description ; which 

 may assist future observers in determining whether more than 

 one species visits our shores. If Pennants figure be an 

 exact representation, the fish it was taken from was certainly 

 a different species to the one under description. 



" My specimen would correspond with Pennants descrip- 

 tion except in the following particulars : viz. length one 

 inch if : the back of a dense blue black, presenting, in cer- 

 tain lights, a brownish tinge ; lateral line central and straight, 

 but inclining upwards, at about its anterior sixth, towards the 

 upper angle of the operculum. 



" The number and arrangement of the guttas in the speci- 

 men under consideration, are as follow : viz. on each side, 

 upper series between os hyoides and origin of pectoral fin, 

 five ; upper abdominal series between base of pectoral and a 

 spot perpendicularly over the ventral, nine ; lower abdominal 

 series, from a spot perpendicularly beneath the posterior mar- 

 gin of orbit, to base of ventral, twelve ; between base of ven- 

 tral and commencement of anal, six ; the two anterior directed 

 downwards and backwards ; the four posterior forming an arch 



