. British and Irish Salmonidae. Salmon. 156 SALMONID^ OF BRITAIN. turned outwards alternately to the right and to the left, being the remains of a double row that existed here when younger, but with increasing age the dental ridge became narrowed and some teeth have fallen out, as remarked on at p. 21. The assertion of Dr. Giinther respecting the head of this bone being tooth- less is possibly a misprint, as it rarely if ever is so naturally in specimens under twenty inches in length, while teeth are often present there in examples exceeding this size. These figures of the vomer in this fish a
. British and Irish Salmonidae. Salmon. 156 SALMONID^ OF BRITAIN. turned outwards alternately to the right and to the left, being the remains of a double row that existed here when younger, but with increasing age the dental ridge became narrowed and some teeth have fallen out, as remarked on at p. 21. The assertion of Dr. Giinther respecting the head of this bone being tooth- less is possibly a misprint, as it rarely if ever is so naturally in specimens under twenty inches in length, while teeth are often present there in examples exceeding this size. These figures of the vomer in this fish are in No. 1 of a female herling or whitling from the Esk, at Carlisle, 8-2 in. in length, head 5^ in the total length, the fish having 43 csecal appendages, and 57+x vertebrae ; some of the teeth have already dropped out, but the remains of a double row along the body of the Fig. 29. Vomer and its teeth from 1, whitling, 8'1 inches long, shown twice natural size; 2, from salmon- trout, 17 inches long, from the Oykell, natural size; 3, from salmon-trout, 16 inches long, from the Teifch. vomer is apparent. No. 2 is the vomer of a salmon-trout frora the Oykell, 17 in. long, having 57+ x vertebrae, and show- ing more teeth along the body of the vomer than is usual in a fish of this size. No. 3 is a salmon- trout from the Teith, 16 in. long, with 52 caecal appendages and 58-^-0! vertebrae. Although it has two teeth along the hind edge of the head of the vomer it only possesses three along its body. The teeth in the jaws and palatines are in a single row. Three to six strong, sharp recurved ones exist on either side of the tongue. Fins—in large examples the fins are comparatively shorter than in smaller ones, and the pectoral rarely extends half-way to the base of the ventral, which latter is situated. Fig. 30. Outlines of tail-fins of various sea trout. 1. female whitling, 8'1 inches long: 2. truff, 8-2 inches long: 3. male whitling, 11 inches long: 4. female salmon-JroKt, from th
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherlondo, bookyear1887
