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 (Coll. Saliniu). 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 u pseudo flesus." 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— 31 on the blind side of the pre- 

 maxillary. 



82. PLATESSA QUADRITUBERCULATA. 



Pleuronectes guadrituberculatus Pallas, Zoogr. Rosso-Asiafc., iii, 423, 1811 (sea between 

 Kamtschatka and Alaska). Bean, Proc. U. S. Nat. Mas., 1881, 241 (Kodiak). 

 Jordan & Gilbert, Syn. Fisb. N. A., 1882, 836 (from specimens collected by 

 Dr. W. J. Fisher). 



Parophrys quadrituberculatus Giintber, iv, 456 (copied). 



Pleuronectes pallasi Steindacbner, Ichth. Beitr., viii, 45, 1879, plate (Kamtscbatka). 



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. It seems 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-Flo under ok Fluke.) 



«. Var. flesus. 



Pleuronectes Ileitis LinnaBUS, Syst. Nat., ed. x, 270, 1758 (after Artedi, and of copyists). 

 Giintber, iv, 450, 1862. Steindacbner, Ichthyol. Bericbt., Secbste Fortset- 

 zung, 53, 1868 (Bilboa, Coruna, Vigo, Barcelona, Cadiz, Gibraltar, Rio Mino, 

 Pouierania, Kattegat; unites flesus and glabra; Spanish localities belong to 

 the latter). Day, Fisb. Great Britain, vol. ii, 33, pi. cv, and of recent authors 

 generally. 



Platessa flesus Fleming, British Aniiu., 1828, 198, and of numerous writers. 



Pleuronectes passer Linnreus, Syst. Nat., ed. x, 271, 1758 (reversed example). 



Pleuronectes flesoides Pontoppidan, "Hist. Nat. Danise, 158, tab. 15," 1765 (reversed 

 example). 



Pleuronectes roseus Shaw, "Nat. Misc.. vii, 238,'' 1800 (albino example). 



