1. SALMO. 



89 



nearly to the hind margin in young examples 7 or 8 inches long. 

 Dentition feeble : the vomerine teeth form a single series, and most 

 of them appear to be persistent to mature age ; they are alternately 

 bent towards the right and left in young examples : teeth on the 

 tongue very smaU. Fins moderately developed ; pectoral somewhat 

 pointed : caudal fin truncate in mature examples, with the angles 

 pointed ; forked in young specimens, in which the length of the 

 middle rays is two-fifths of that of the outer ones. Tail not elon- 

 gate, covered with rounded scales, which are a little larger than 

 those of the trunk. There are fourteen scales in a transverse series 

 running from behind the adipose fin obliquely forwards to the lateral 

 line. 



S. gallivensis, specimen b, §tlis nat. size. 



Young, with about nine Parr-marks, with ocellated black and red 

 spots, and with white borders to the anal, dorsal, and ventral fins as 

 in S. fario. Mature females, caught in August, very dark-coloured, 

 with silvery lustre on the lower parts only ; sides with rather nume- 

 rous black X-shaped spots ; opercles with black spots. Fins black : 

 dorsal with a few small, obscure spots; caudal with an indistinct 

 black posterior margin. 



_A migratory species from Gal way, well characterized by the acutely 

 pointed, but not elongate snout, broad, convex head, small eye, feeble 

 teeth, feeble maxillary and mandible, and by extremely thin and 

 short pyloric appendages, the longest of which is 1 inch long, and 

 not thicker than the quill of a pigeon. We received at the same time 

 and from the same locality, through the kindness of Mr. Godman, 

 some young individuals ; but the greater part of them appear to be 

 hybrids, probably between this species and S. gabnardi. 



