298 



THE FlJKSH-WATKlf FISHES OF EUROPE. 



only in larg-e males. The male has also a short hook to the mandible. The 

 maxillary bone is sti'ong-, expanded in its hinder part, much as in the Schweb- 

 furelle, and similarly extends back beyond the orbit in old fishes. The pre- 

 opereulnm is crescent-shaped, with the lower limb distinct. The posterior 

 opercular margin is obtusely rounded, the operculum being* short. The teeth 

 are strou^^^ and the vomerine teeth are at first in a sing-le series, and then 

 irregularly placed. The fins show no distinctive peculiarities, but the caudal 

 becomes truncate with maturity. There are sixteen rows of scales in a trans- 

 verse series, descending from behind the adipose fin forward to the lateral line; 

 which is one row more than is found in the Saliao lacnstris. The sides have 

 a reddish tone with a number of X -shaped brownish spots, and, as usual, the 

 spots on the operculum are round. 



Salmo dentex (Heckel). — The Great Dalmatian 



Trout. 



1). 12—1:3, A. 1:>, P. 1:5, V. U, C. 7/17/0. Scales: lat. line US— 120, 

 transverse 2t — 85. 



There is probably no other European Salmonoid in which the jaws are so 

 jKjwerfully developed as in this species, but the large size of the pre-maxillary 



Fig. 152. — 8ALM0 DENTEX (heckel). 



teeth, which suggested the name deiiicx, is more conspicuous in young than in 

 old specimens (Fig. 15£). 



The head is small and pointed ; the arch of the nose is low, and the 

 vhole l)ody is covered with small black marks, which often take on an 

 X-shape. Among these a few larger round red spots are scattered. The length 

 of the head exceeds the height of the body, the fish being five times as long as 

 high, and four and a half times as long as the head. The eye is one-fifth of 

 the length of the head. The l)readth of the frontal interspace between the 



