297 
AEGEjmNxV. 
The mouth small, depressed at the angle; jaws without teeth; 
strong hooked teeth on the tongue, and a transverse row of small 
teeth in front of the vomer. Six rays in the gill membrane. Dorsal 
fin before tbe ventrals. The adipose fin in one species is so small as 
sometimes to have escaped observation. 
HEBRIDAL SMELT. 
Osmerus Hehridlcus, Hebridal Smelt, Yaueeli,; Br. Fishes, vol. i! 
p. 133. 
" “ “ Bloch ; by Schneider, pi. 81, 
Sahno silus. 
Argentina silus junior, Nilssox. 
This fish was first recognised as British by Mr. Yai-rell, 
who believed it to be undescribed when he received it from 
Mr. Euing, by whom it was obtained from a fisherman in the 
Isle of Bute, where it had been long known, although not 
often taken. Mr. Yarrell judged it to belong to the genus 
Osmerus, Avith the characters of which, hoAvever, it did not 
exactly agree, from the position of the dorsal fin, which is 
situated in advance of the ventrals, and also in the extent of 
its gape. But this doubt in the classification of fishes closely 
allied to each other is the more to be excused, as Cuvier, in 
his “Animal Kingdom,” had thought fit to place it in the 
genus Coregonus, from whence it has been removed by his 
coadjutor Valenciennes into that of Argentina, with the name 
of A. Yarrellii; and its place in this genus at least is 
countenanced by the authority of Nilsson, in his “History of 
Scandinavian Fishes,” whose authority is the more to be 
regarded, since this species is well known to him as being a 
native of the German Ocean. It appears to have been called 
VOL. IV, 2 Q 
