SYNOPSIS. 385 



at the base and extremity, the centre yellow ; dorsal and 

 ventral fins yellow at the base, bluish towards the ends ; 

 anal and caudal greyish yellow with violet edges. Linn., 

 Yarr. Brit. Fish., i. 461. 



Fam. XVI. Salmonidce. Body covered with scales; doi^sal 

 fins two, the second small, adipose, and without rays. 



GEN. LXV. SALMO. Mouth cleft as far or nearly as far 

 as the eyes, the vomer, palatine, and maxillary bones armed 

 with teeth ; branchiostegous rays varying in number, but al- 

 ways exceeding eight ; ventral fins opposite the middle of the 

 first dorsal, second dorsal opposite the anal fin. 



Sp. 124. S. salar. The Salmon. Posterior margin of the 

 gill-cover forming the segment of a circle ; teeth on the 

 vomer confined to the anterior extremity. Fin-rays, D. 1 3 : 

 P. 12 : V. 9 : A. 9 : C. 19. Caudal forked ; ventrals dusky 

 on the side next the body. Linn., Block, Ichtli., pis. 20 

 98 ; Perm. Brit. Zool, iii. p. 382 ; Jenyns" 1 Brit. Vert., 

 p. 421 ; Yarr. Brit Fish., ii. p. 1 ; Jardine^s Illust. Brit. 

 Salmonidce, pi. 7. Grilse, Ditto, pis. 1, 2. 8. Parr, Sal- 

 mon Fry, Trans. Roy. Soc. of Edin., xiv. pi. 22. 

 Sp. 125. S. eriox. Bull Trout, or Grey Trout. Posterior 

 margin of the gill-cover but little curved ; teeth on the 

 vomer confined to the anterior extremity ; lower end 

 of the pectorals dusky ; caudal square at the extremity 01 

 slightly convex, ventrals white. Linn., Jenyns"* Brit. Vert., 

 p. 423 ; Yarr. Brit. Fish., ii. 71. S. cinereus vcl griseus, 

 Willugh., S. cambricus, Don. Brit. Fi*h., iv. pi. 91. 

 Sp. 126. S. trutta. Salmon Trout. Gill-cover slightly pro- 

 duced behind, the margin rounded ; vomer and teeth not 

 confined to the anterior extremity, but extending far back ; 

 back and sides with X-shaped spots ; ventrals white ; tail 

 more or less forked. Linn., Block., pt. i. pi. 20. Sea Trout, 

 Penn. Brit. Zool., iii. p. 397 ; Yarr. Brit. Fish., ii. 77 ; 

 Jenyns" 1 Brit. Vert., p. 423. Jardine's Illust. Brit. Salm., 

 pis. 3, 9, 10, 11. S. albus, Phinock, Flem. Brit. An., p. 180. 

 Trutta salmonata, Willugh., p. 193. 

 Sp. 127. S.Jario. Common Trout. Vomerine teeth ext 



