PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 325 
NOTE ON ANEW FLAT-FISH (LEPIDOPSETTA ISOLEPIS) FOUND IN 
THE MARKETS OF SAN FRANCISCO. 
By W. N. LOCKINGTON. 
In the review of the Pleuronectide of San Francisco (Proce. U. 8. Nat. 
Mus. 1879, 69-108), a species belonging to the genus Lepidopsetta (Gill) 
is described as identical with the Platichthys umbrosus of Girard (Pac. 
Rail. Rep., x, 149, 1857). At the epoch when this description was writ- 
ten, as well as on previous occasions when a comparison was instituted 
between this species and the description of Girard above referred to, 
several discrepancies were noted, yet it was not supposed possible that 
that author had redescribed one of Dr. Ayres’s species when the de- 
scription of the latter was accessible to him. 
Such, however, as first pointed out by Dr. Gill, turns out to be the 
ease, and Platichthys wmbrosus (Grd.) must sink into a synonym of 
Lepidopsetia bilineata (Ayres), while the form deseribed by me as L. 
umbrosa needs renaming. 
The synonymy of the two species will be as follows: 
Lepidopsetia bilineaia. 
Platessa bilineata Ayres, Proc. Cal. Acad. Nat. Sci., i, 40. 
Platichthys wmbrosus Grd., Pac. Rail. Rep., x, 1855-757, 149. 
Lepidopsetta dilineata Gill, Proc. Phil. Acad. Nat. Sci. 
Lepidopsetta umbrosa Gill, Proc. Phil. Acad. Nat. Sci. 
Lepidopsetia bilineata Lockn., Proc. U. S. Nat. Mus. 1879, 103. 
Lepidopsetta isolepis sp. nov. 
Lepidopsetta umbrosa Lockn., Proc. U. 8. Nat. Mus. 1879, 106. 
This species is not closely related to L. bilineata. Its ctenoid scales, 
almost uniform over the head and body, its nearly straight lateral line, 
its smaller eyes, with a broader, flattish interorbital space, as well as the 
differences in the form and the number of fin rays, completely distinguish 
L. isolepis from L. bilineata. 
Typical examples are in the United States National Museum. 
NOTE ON A FORGOTTEN PAPER OF DR. AYRES AND ITS BEARING 
ON THE NOMENCLATURE OF THE CYPRINOID FISHES OF THE 
SAN FRANCISCO MARKETS. 
By DAVID S. JORDAN. 
During the infancy of the California Academy of Sciences the reports 
of its proceedings were published in the Daily Placer Times and Tran- 
script, a newspaper then issued in San Francisco. 
In the files of this paper for 1854 occur descriptions of new species of 
fishes from the San Francisco markets, by Dr. W. P. Gibbons and Dr. 
W. O. Ayres.. The descriptions of Dr. Gibbons were soon after repub- 
