PISHES—SALMONIDAE—FARIO GAIRDNERI. 
313 
Fig. 3 is a scale from the lateral line. Fig. 4, a scale from the abdominal region, midway 
between the lateral line and the ventral fins. Figs. 2—4 are magnified views. 
List of specimens. 
Catal. 
No. 
No. of 
spec. 
Age. 
Locality. 
When 
collected. 
Whence obtained. 
Nature of 
specimen. 
Collected by— 
579 
i 
Adult. 
Cape Flattery, Oregon. 
1854 
Lt. W. P. Trowbridge; 
Alcoholic. 
Lt. Trowbridge_ 
580 
i 
Adult. 
Puget’s Sound, W. T_ 
1853 
Gov. 1.1. Stevens_ 
_do- 
Dr. Geo. Suckley_ 
4. FARIO GAIRDNERI, Grd. 
Plate LXNI, Figs. 1 — 4. 
Spec. Char. —Body fusiform in profile, very compressed ; head comprised four times in the length, the caudal fin excluded. 
Upper jaw longest; maxillary curved, extending to a vertical line intersecting the posterior rim of the orbit. Anterior margin 
of dorsal equidistant between the extremity of the snout and the base of the caudal. Caudal fin furcated. Back silvery grey, 
sides silvery, and belly yellowish white. Body obsoletely spotted with black ; similar black spots on the dorsal and caudal fins. 
Syn.— Salmo gairdneri, Richards. Faun. Bor. Amer. Ill, 1836,221 — DeKay, New Y. Fauna, IV, 1842, 243.— Storer, 
Synops. 1846, 196. 
Fario gairdneri, Grd. in Proc. Acad. Nat. Sc. Philad. VIII, 1856, 219. 
The body is fusiform in its outline, hut very much compressed and thin, giving it a much 
narrower hack than is generally the case with its congeners. The head constitutes the fourth of 
the entire length, excluding the caudal fin ; it is sub-conical in shape, anteriorly rounded, the 
upper jaw slightly overlapping the lower. The mouth is moderately cleft, the posterior 
extremity of the maxillary extending to a vertical line drawn inwardly to the posterior rim of 
the orbit, as in Fario clarlcii. The teeth generally are less developed than in the latter, in 
which respect it resembles Fario argyreus. Those on the tongue are exiguous and far apart in 
either row ; the pterygoidian teeth are a little smaller than the den tar and maxi liar ones ; the 
vomerians are the stoutest of all, at least those which exist along the shaft of that bone ; for, on 
the front they are not conspicuous at all. The eye is elongated, sub-elliptical ; its diameter being 
contained five times and a half in the length of the sides of the head, and about once and a half 
in advance of its anterior rim. The nostrils are situated towards the upper surface of the rostrum, 
nearer the orbit than the extremity of the snout; the anterior aperture is sub-circular and 
larger than the posterior. Twelve branchiostegal rays may be observed on either side. 
The greatest depth of the body, taken in advance of the dorsal fin, is equal to the length of 
the head ; hence enters four times in the length, the caudal fin excluded. The anterior margin 
of the dorsal is equidistant between the snout and the insertion ot the caudal fin ; its height 
anteriorly is nearly equal to its length. The adipose is slender and placed opposite the posterior 
portion of the anal. The caudal fin is furcated and constitutes a little more than the seventh of 
the total length. The anal has the general shape of the dorsal, but it is deeper anteriorly than 
it is long. The origin of the ventrals is placed opposite the third ray of the dorsal, but the tip 
of its rays do not extend posteriorly as far as the tip of the posterior rays of the dorsal. The 
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