SALMO GENIVITTATUS. 



315 



Salmo genivittatus (HECKEL AND KNER). 



28 

 D. 11. Scales: lat. line 120, trans. 



Heckel and Kner had but one specimen of this fish, which was eighteen 

 inches long- (Fig. 160). It was found in the Sala, a tributary of the Isonzo. 

 Nothing is known of its habits. It is a beautiful species, of elegant form, 

 with a large head, small eye, short dorsal and anal fins, and a long tail. The 

 head, according to Heckel and Kner, is about one-quarter of the length of the 

 body, inclusive of the caudal fin ; its height is two-thirds of the length, and 



Fig. 1GO. SALMO GENIVITTATTJS (HECKEL AND KNEli), 



its breadth nearly half the length. The eye is twice its diameter from the 

 snout, five times its diameter from the hinder opercular margin, and the 

 breadth of the convex frontal region is- more than twice the orbital diameter. 

 The lunate fold at the front of the orbit is small. The mouth is large, and 

 the strong, broad, maxillary bone reaches far behind the eye. The dentition 

 is strong; the pre-maxillary teeth are larger than those in the maxillary bone; 

 the vomerine plate carries six teeth in a transverse series in front, and a 

 parallel doiible row posteriorly. 



The pre-operculum is rounded ; the lower edge of the operculum is directed 

 backward. It is higher than the sub-operculum, which is wider than the 

 operculum. The number of branchiostegal rays is ten on the right, eleven 

 on the left. The last gill-arch carries about six short, thick, blunt rake-teeth. 



o * * 



The distance from the snout to the occiput is one-third of the distance from 

 the snout to the dorsal fin; and the distance between the adipose fin and the 

 dorsal is equal to the distance between the dorsal and the occiput. There is a 

 slight indentation of the profile behind the eyes, but it is less marked than in 



