SALMONOIDE.E. 205 



angular projections, and its surface is destitute of any radiating furrows, having only the usual 

 fine concentric stria?. The scales on the anterior part of the back have short marginal ridges, 

 causing them to appear as if finely toothed. The lateral line is straight, equidistant from the 

 dorsal and ventrals; the scales composing it are smaller than the adjoining ones and trun- 

 cated, the uncovered portion being nearly triangular ; they are ninety-six in number, including 

 six very small ones on the caudal. A vertical line before the dorsal contains twenty-three or 

 twenty-four scales, of which nine are above the lateral line and eight between it and the ven- 

 trals. A linear inch on the sides contains six scales or six and a half. 



Colour of the back and sides intermediate between honey-yellow and wood-brown, with a 

 narrow blackish-grey border to each scale : the tints are paler on the sides, and the belly is 

 pearly-white. The scales are bright. The cheeks, gill-covers, and irides have a yellow colour 

 with metallic lustre, and therms are also mostly yellowish. 



Form elegant. Profile lanceolate tapering evenly into the tail : the belly rather less curved 

 than the back, which is moderately arched. The body is four-sided with the angles rounded off: 

 the depth one-fifth of the total length, excluding the caudal, and the thickness two-thirds of the 

 depth. Head small, being only one-sixth of the length from the tip of the snout, to the end 

 of the scales on the caudal : it is of considerable breadth at the nape, and becomes one-fourth 

 narrower between the anterior edges of the orbits, where it rounds off suddenly into a thin 

 snout, which droops in profile. In the dried specimen there is a short sagittal crest between 

 the orbits, and also lateral tubular ridges as in the Attihawmeg, but the former does not end 

 in a furrow. The orbit is exactly its own diameter from the end of the snout, and two dia- 

 meters and a half from the edge of the gill-cover. The nostrils are nearer to the orbit than 

 to the tip of the snout. The mouth is remarkably small, and its orifice is quadrangular, the 

 end of the lower jaw being truncated to the same width with the horizontal edge of the small 

 intermaxillaries. The labials are very small, particularly their appophysis ; their tips fall 

 short of the orbit. The under jaw, even when depressed to the utmost, does not reach so far 

 forward as the tip of the snout. The suboperculum is widest anteriorly, and the operculum is 

 heart-shaped. No Teeth whatever can be perceived, even with a lens, in the dried specimen : 

 the branchial rakers are small and soft. 



Fins.— Br. 7 * ; D. 15—0; P. 15; V. 11 ; A. 13; C. 19f 



The dorsal is farther forward than in the Attihawmeg, the distance from the end of the 

 snout to its first ray, when carried backwards, scarcely reaching the adipose fin, while in the 

 latter species it passes it. The centre between the tip of the snout and end of the scales on 

 the caudal is under the penultimate dorsal ray. The adipose is partly posterior to the anal. 

 The caudal is forked. 



Intestines. — Stomach like that of the Tullibee, the pylorus very narrow. Cceca eighty- 

 seven, crowded under the pylorus where they surround the gut, and also occupying one-third 

 of its length in three or four rows. The lower third of the intestine is furnished with valvules 

 conniventes, half an inch of it at the anus being smooth. Faces black. 



This seems to be the prevalent number of gill-rays, but some of the individuals taken in the Arctic Sea had eight. 



