292 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [68] 
mens of 15 pounds have been recorded. It is rather more northerly in 
its range than the mud-flounder, it being a comparatively rare species in 
the Mediterranean. 
Our specimens of this species are from the markets of Paris. We have 
examined others in the Museum at Cambridge, from various localities in: 
France, England, Holland, and Scandinavia. There are also a number 
of specimens from Trieste (Coil. Salmin). In one lot of these there are 
large black rounded blotches, inky in color, and permanent in alcohol. 
These take the place of the usual orange spots, which are evanescent in 
alcohol. Others from the same locality have the usual coloration. 
We know nothing of the species called “ pseudoflesus.” It seems to 
us likely that it is a variety, or perhaps accidental variation, of Platessa 
platessa, the chief difference consisting in the presence of ciliated scales 
on the head and other parts of the body. It must be regarded as a 
very doubtful species at the best. 
The alleged species Platessa borealis is also unknown to us. It is 
said to differ in having smaller teeth—351 on the blind side of the pre- 
maxillary. 
82. PLATESSA QUADRITUBERCULATA. 
Pleuronectes quadrituberculatus Pallas, Zoogr. Rosso-Asiat., iii, 423, 1811 (sea between 
Kamtschatka and Alaska). Bean, Proc. U. 8S. Nat. Mus., 1881, 241 (Kodiak). 
Jordan & Gilbert, Syn. Fish. N. A., 1882, 836 (from specimens collected by 
Dr. W. J. Fisher). 
Parophrys quadrituberculatus Giinther, iv, 456 (copied). 
Pleuronectes pallast Steindachner, Ichth. Beitr., viii, 45, 1879, plate (Kamtschatka). 
Habitat.—Behring Sea. 
This small flounder is known to us only from descriptions and from 
a specimen (28025) collected by Mr. W. J. Fisher at Kodiak, described 
by Jordan and Gilbert. Itseems to be a rare species even in the remote 
regions it inhabits, Although its pharyngeal teeth have not been ex- 
amined, there can be little doubt that it will prove a near ally of Pla- 
tessa platessa. : 
83. PLATESSA FLESUS. 
(THE MUD-FLOUNDER OR FLUKE.) 
a. Var. flesus. 
Pleuronectes flesus Linnwus, Syst. Nat., ed. x, 270, 1758 (after Avtedi, and of copyists). 
Giinther, iv, 450, 1862. Steindachner, Iehthyol. Bericht., Sechste Fortset- 
zung, 53, 1863 (Bilboa, Coruna, Vigo, Barcelona, Cadiz, Gibraltar, Rio Mino, 
Pomerania, Kattegat; unites flesus and glabra; Spanish localities belong to 
the latter). Day, Fish. Great Britain, vol. ii, 33, pl. ev, and of recent authors 
generally. 
Platessa flesus Fleming, British Anim., 1828, 198, and of numerous writers. 
Pleuronectes passer Linneus, Syst. Nat., ed. x, 271, 1758 (reversed example). 
Pleuronectes flesoides Pontoppidan, ‘* Hist. Nat. Daniw, 158, tab. 15,” 1765 (reversed 
example), 
Pleuronectes roseus Shaw, ‘‘ Nat. Misc., vii, 238,” 1800 (albino example). 
