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., 

 Tarr. Brit. Fish., i. 461. 

 Fam. XVI. Salmonidce. Body covered with scales; dorsal 

 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 tlio 

 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., Bloch, Ichth., pis. 20 

 & 98 ; Penn. Brit. Zool, iii. p. 382 ; Jenyns' Brit. Vert., 

 p. 421 ; Tair. Brit Fish., ii. p. 1 ; Jar dine'' s Illust. Brit, 

 Salmonidce, pi. 7. Grilse, Bilto, 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 em-ved ; teeth on the 

 vomer confined to the anterior extremity; lower end 

 of the pectorals dusky ; caudal square at the extremity or 

 slightly convex, ventrals white. — Linn., Jenyns'' Bnt. Vert, 

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

 Willugh., S. cambricus, Don. Brit. Fish., iv. pi. 91. 

 Sp. 126. S. trv.tta. 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. Bnt. Zool., iii. p. 397 ; Tarr. Brit. Fish., ii. 77 ; 

 Jenyns'' Brit. Vert., p. 423. Jardine''s Ilhcst. Brit. Salm., 

 pis. 3, 9, 10, 1 1. S. albus, Phinoek, Flem. Brit. An., p. 180. 

 Trutta salmonata, Willugh., p. 193. 

 Sp. 127. S.fario. Common Trout. Vomerine teetli extend- 

 B B 



