512 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
the gill-membranes united to the isthmus in front; gill-rakers none. One Hawaiian species, described 
in Section II. 
Chascanopsetta Alcock, Journ. Asiatic Soc., Bengal, LXIII, Pt. II, No. 2, 1894, 128 ( lugubris ) 
Genus 259. PCECILOPSETTA Gunther. 
Mouth rather narrow, the length of the maxillary being one-third of that of the head, each jaw 
with a narrow band of villiform teeth; vomerine and palatine teeth none; the dorsal fin commences 
above middle of eye; scales very small; gill-membranes united below the throat. The single 
Hawaiian species of this genus is fully described by Doctor Gilbert, in. Section II. 
Poccilopsetta Gunther, Zool. Challenger Rept., Shore Fishes, I, Parts I-VI, 49, 1880 ( colorata ). 
Genus 260. PLATOPHRYS Swainson. 
Eyes and color on left side; body ovate, strongly compressed; mouth of the large type, but com- 
paratively small; the maxillary .33 or less of length of head; teeth small, subequal, in 1 or 2 series; 
no teeth on vomer or palatines; interorbital space broad and concave, broadest in adult males; gill- 
rakers moderate; dorsal fin beginning in front of eye, all its rays simple; ventral of colored side on 
ridge of abdomen; caudal convex behind; pectoral of left side usually with 1 or more filamentous 
rays, longest in the male; scales very small, ctenoid, adherent; lateral line with a strong arch in front. 
Coloration usually variegated. 
The sexual differences are greater than usual among flounders, and the different sexes have often 
been taken for different species. As a rule, in the males the pectoral tin on the left side is much pro- 
longed, the interorbital area is much widened and very concave, and there are some tubercles about 
the snout and lower eye. The young fishes, as is usually the case, resemble the adult females. Lately 
Doctor Emery has shown that the larval flounder, known as Peloria heckeli, is in all probability the 
young of Pleuronectes podas. The generic name Corcolus, based on forms slightly more mature than 
those called Peloria, probably belongs here also. We have seen no larval forms so young as those 
which have been described as Peloria heckeli, but we have examined small transparent flounders, one 
with the eyes quite symmetrical, taken in the Gulf Stream, and another with the eyes on the left 
side, taken at Key West, which may be larvae of Platophrys ocellatus. The figures published by Emery 
seem to make it almost certain that the corresponding European forms belong to P. podas, although 
some doubt as to this is expressed by Facciola. The species of Platophrys are widely distributed 
through the warm seas, no tropical waters being wholly without them. All are extremely closely 
related and can be distinguished with difficulty. On the other hand, the variations due to differences 
of age and sex are greater than in any other of the Hawaiian genera. 
Solea Rafinesque, Indice d'lttiologia Siciliana, 52, 1810 ( rhomboide ); not of Quensel, 1806. 
Platophrys Swainson, Nat. Hist. Class'll Fishes, II, 302, 1839 (ocellatus). 
Peloria Cocco, Intorno ad Aleuni Pesci del mar di Messina, Giorn. del Gabin., 1844, 21-30, Lettre di Messina (heckeli, a 
larval form of P. podas); not Pelorus of Montfort, 1808. 
? Coccolus Bonaparte in Coeco, Aleuni Pesci Messina, 21, 1844 (annedens); larval form, probably of P. podas, with the right 
eye in transit to the left side). 
Bothus Bonaparte, Catologo Metodico Persi Europei, 49, 1846 (podas); not of Rafinesque. 
Bhomboidichthys Bleeker, Act. Soc. Sci. Indo-Nederl. Manad. and Makassar, T, 1856, 67 (myriaster) 
Platophrys Bleeker, Versl. Kon. Ak. Weten., XIII, 1862, 426 (ocellatus). 
a. Anal rays about 70 pantherinus, p. 512 
aa. Anal rays about80 , martens, p. 513 
427. Platophrys pantherinus (Riippell). “ Pakii;” “ Uiui .” 
Head 3.6 in length; depth 2; eye 3.9 in head; snout 4; interorbital 5.4; maxillary 3.2; D. 92; A. 
69; P. i, 9; V. 6; scales 31-88-36. 
Body elongate, very deep and compressed, ellipsoid; head a little deeper than long, orbicular, the 
upper profile evenly c6n vex; snout obtuse; jaws slightly produced; mouth curved, oblique; lipsrather 
broad, fleshy ; maxillary reaching below anterior portion of eye, but not to pupil, its distal expanded 
extremity 2 in eye; teeth in jaws minute, forming rather broad bands; eyes well separated, lower ante- 
rior, its posterior margin midway in length of head, upper nearly half an eye diameter posterior; mar- 
gin of preopercle obtuse, and, like that of gill-opening, undulate; nostrils close together in front of 
