54 salmonid.t;. 



The loiigth of the pectoral fin slightly exceeds that of the space 

 between the orbit and the angle of the operculum. Ventral shorter 

 than pectoral, a little more than half the length of the distance of 

 its root from the vent ; its outermost ray is vertically opposite the 

 eleventh of the dorsal fin. Caudal ray emarginate. 



There are 120 transverse series of scales, counting immediately 

 above the lateral Hne ; the series descending from the first dorsal 

 ray backwards to the lateral line contains twenty-eight scales ; that 

 from the acUpose forward to the lateral hne contains sixteen scales, 

 and there are twenty-four longitudinal scries between the lateral hne 

 and the root of the ventral. All the scales are rounded behind. 



Eack greenish browii ; sides reddish, shining silvery ; belly silvery ; 

 numerous X-shaped black spots are scattered on the regions above 

 the lateral line ; the operculum bears two or thi-ee dark-brown spots ; 

 the dorsal has two or three series of black spots ; the other fins im- 

 macidate ; the pectoral white, with the outermost ray black along its 

 outer margin, and the extremity of the fin broadly tinged with 

 blackish ; caudal and anal blackish. 



Description of a Female Hybrid specimen from the Rhymney 

 {probably after second return from the sea), 



inches. 



Total leng-th , 15^ 



Greatest depth of the body . 2'^ 



Length of the head 3 



Girth of biggest part of body 71 



Least depth of the tail : 1| 



Girth of narrowest part of tail 31 



Distance between end of snout and eye | 



Length of maxillary bone li 



Distance between eye and angle of pr£Eopercidum . . 1 



Greatest width of operculum -f 



Greatest depth of operculum ^ 



Distance between occiput and origin of dorsal fin . . 4| 



Distance between end of dorsal and root of caudal fin 5| 



Length of base of dorsal 1| 



Greatest height of dorsal If 



Length of pectoral 2 



Distance between root of pectoral and root of ventral 3f 



Length of ventral fin 1| 



Distance between root of ventral and origin of anal. . 2f 



Length of anal fin 1| 



Greatest depth of anal . . 1^ 



Length of longest caudal ray 2\ 



Length of middle caudal ray 1^ 



The greatest depth of the body is below the origin of the dorsal 

 fin, and is a little more than one-fifth of the total length (caudal not 

 included) ; the length of the head is contained about four times and 

 a half in the same. The snout is scarcely produced, conical, and is 



