482 GOLDEN TROUT OF CALIFORNIA—JORDAN. 
the fin light olive with four or five rows of small black spots; pectorals | 
light orange; ventrals deep orange, with a faint blackish tip; the an- 
terior edge of the fin conspicuously and abruptly whitish, as in Sal- 
velinus fontinalis. Anal dusky orange, the tips of the last rays black- 
ish, the outer anterior corner abruptly white, the white stripe wider 
than the pupil and separated from the color of the fin by a dusky shade. 
Caudal olive, tinged with orange on its lower edge, and profusely 
spotted with black. Inside of mouth pink; of gill cavity, light orange. 
Of the three typical specimens two have been sent to the U.S. Na- 
tional Museum and one remains in the museum of the Leland Stanford — 
Junior University. 
This trout is evidently an off-shoot or descendant of the widely dis- 
tributed Cut-Throat Trout, Salmo mykiss, which is found in all the 
rivers suitable for trout between the Sierra Nevada and the Rocky 
Mountains. It differs, however, from any known specimens of any of 
the many varieties of Salmo mykiss in its pattern of coloration and the 
absence of the deep red patch between the branches of the lower jaw, 
from which Salmo mykiss receives its common name—the Cut-Throat 
Trout—and in the small size of its scales, which are more numerous 
than in any of the forms of Salmo mykiss. Matters of less importance, 
which are, however, comparatively distinct, are the presence of white. 
and black edges to ae fins, and in the ieee: of teeth on the hyoid — 
bone. The name agua-bonita, suggested for the species, is that of — 
Agua Bonita Falls, the cataract in Voleano Creek, near which these 
specimens were found. 
The earliest record of this trout is that of Jordan and Henshaw in 
Appendix NN of the Annual Report of the Chief of Engineers for 1878, 
p. 199. The specimen collected by Mr. H. W. Henshaw, in 1875, frou 
the south fork of the Kern River, and No. 17107 in the Watiowal Mu- 
seum collection, are referred to Salmo plewriticus Cope. With this . 
reference is the remark that “the extension of its range west of the — 
Sierra Nevada is rather unexpected. The prevalent theory that most ; 
of the species of trout have a narrow local range is hardly supported 
by a study of our western forms.” This trout, Mr. Henshaw says, was : 
ot innate one a 
ome 
‘abundant in the South Fork of the Kern inven, beyond which state- 
ment nothing can be said of its distribution on the western coast, or of 
its abundance as compared witn S. irideus, the distinctness of the ia ms 
not having been recognized at the time of the collection.” 
On page 195 of the same paper is a reference by Mr. Henshaw to the 
** Golden Trout” which apparently belongs to the species here described, 
although Mr. Henshaw identifies his specimens taken from near Mountil 
Whitney with the Salmo irideus. Mr. Henshaw says: 
This is the common ‘Brook Trout” of the small mountain streams of the Pacific 
slope, and up to an altitude of 9,000 feet it is the rare exception to find a suitable 
stream that is not well stocked with it. Upon many of them, as the tributaries of 
the South Fork of the Kern River, these trout are found in very great abundance, 
each pool and rapid numbering its finny denizens by the score. They may be taken 
in any sort of weather, at any hour of the day, by almost any kind of bait. During 
