290 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [66] | 
80. PSEUDOPLEURONECTES PINNIFASCIATUS. 
Pleuronectes pinn ifasciatus (Kner) Steindachner, Ueber einige Pleuronectiden, ete., aus 
Decastris Bay, 1870, 2, pl. 1, f. 1 (Decastris Bay). 
Habitat.—Sea of Kamtschatka, Decastris Bay. 
This species is known to us only from Dr. Steindachner’s description 
and excellent figure. From this we conclude that it belongs to the 
group called Pseudopleuronectes, although its pharyngeals have not 
been described. It seems to us nearer to P. americanus than to Liop- 
setta glacialis. 
Genus XXXIV.—PLATESSA. 
Pleuronectes Artedi, Genera, etc., in part. 
Pleuronectes Linneus, Syst. Nat., ed. x, 268, 1758 (includes all known Pleuronec- 
lide). 
Platessa Cuvier, Régne Animal, ii, 1817 (platessa), (first subdivision of Pleuronectes 
is): 
Platessa Fleming, Brit. Anim., 1828, 198 (vulgaris-—platessa), (first restriction of 
Pleuronectes L. to Pl. maximus and relatives). 
Pleuronectes Swainson, Nat. Hist. Class’n Anim., ii, 1839 (platessa), (second re- 
striction of Pleuronectes). 
Platessa DeKay, New York Fauna, Fishes, 1842 (platessa). 
Pleuronectes Bleeker, Comptes Rendus Acad. Amsterd., xiii, 1862 (platessa), (and 
of most recent authors). 
Flesus Moreau, Poissons de France, 1881, 299 (flesus). 
TyPE: Pleuronectes platessa Linneus. 
The reasons for retaining for this genus the name Platessa instead 
of Pleuronectes have been given under the head of the latter genus, 
It is possible that the numerous related groups or genera, Pseudopleu- 
ronectes, Platichthys, and Liopsetta, should not be separated from Pla- 
tessa. Convenience in definition of the groups seems, however, best 
served by regarding each of these types as forming a distinct genus, 
though whether they are called genera or subgenera is a matter of 
minor importance. The group Flesus is fairly well defined, and may, 
perhaps, also merit generic rank. 
ANALYSIS OF SPECIES OF PLATESSA. 
a. Teeth incisor-like, compressed, close set, forming a continuous cutting edge; no 
stellate scales at bases of dorsal and anal rays; lower pharyngeals narrow, 
the teeth almost uniserial. (Platessa.) 
b. Snout projecting, forming a distinct angle above eye ...........--PLATESSA, 81. 
x. Seales all cycloid, no ciliated scales anywhere ; a series of about six small, 
bony tubercles on ridge above opercles; a small tubercle behind upper 
eye, and one before lower; interorbital space narrow, smooth. Head, 33; 
depth, 2. D. 67 to 77. A. 50 to 57. Vertebre, 14-4 29=43. Color, 
brownish or dusky, with rather large, round yellowish ae which fade in 
spirits. (These spots rarely black, and persistent.)...Var. platessa, 81 (a). 
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