218 Field and Forest Rambles. 



the breeding season. The operculum (o) is rather short, 

 its length being not more than half its depth in the adult, 

 whilst in the young it is much more. The operculum 

 is well ossified, presenting the usual striae observed also in 

 the sewin and other sea trouts. The sub-operculum (s) bulges 

 out at v, beyond the end of the operculum. The point of 

 junction between the two posteriorly being, as I before stated, 

 nearer to the lower margin of the gill opening in the adult, 

 and about equidistant in its smalt. The pre-operculum, 

 (p) has a very distinct lower margin, which passes by a 

 wavy, rounded angle into the hinder margin. The snout 

 is long, and knobbed in males during the breeding season, 

 and for some months subsequently (see m and n), the promi- 

 nence being of one or other of these shapes, i. e., either 

 truncated, or, recurving in the old fish, where it is always 

 more or less permanent, and sinks deeply into a correspond- 

 ing hollow in the upper jaw. The labial (/) is very strong, 

 and longer than the snout. The head of the vomer differs 

 from that of the sewin in having a few permanent strong 

 teeth, which, as before stated, extend in the young in a zig- 

 zag line down the bone for nearly the entire length of the 

 palatines. In the adult they gradually disappear to two or 

 three on the head of the vomer. It would appear, therefore, 

 that the teeth differ in the sewin and Glover i. 



Fins. — The fins of the 5. Gloveri are moderate in length ; 

 the tail is deeply forked in young and adolescent specimens 

 up to eight inches in length, but the longest rays are not 

 twice as long as the middle rays. In the adult and aged 

 the hind margin of the tail is nearly even, but never rounded. 

 I have examined its parr in June, and the smalt in December, 

 when the blue bars seem to be present even in specimens from 

 eight to ten inches in length, which, moreover, retain eight 

 to ten red spots along the lateral line. There are always 

 large circular black spots on the gill covers, more numerous 

 and conspicuous in certain specimens than in others, and 

 scarcely ever in the same numbers on both sides. The result 



