SCIENTIFIC EESULTS OF EXPLORATIOI^S BY THE U. S. 

 FISH COMMISSION STEAMER ALBATEOSS. 



[Published by permission of Hon. Marshall McDonald, Commissioner of Fisheries.] 



No. XXXIII.— DESCEIPTIONS OF TWO NEW FLOUNDERS, GASTROPSETTA, 

 FRONTALIS AND CYCLOPSETTA CHITTENDENI. 



By Barton A. Bean, 



Assistant Curator of the Department of Fishes. 



The U. S. Fish Commission steamer Albatross obtained on January 

 15, 1885, at station 2317, lat. 24° 25' 45" N., long. 81° 40' 45" W., being- 

 near Key West, Fla., in 45 fatlioms of water, two specimens of a 

 liandsome flounder, wliicli appears to be new. Tlie larger example, the 

 subject of the illustration (fig. 1), is eight inches long, while the smaller 

 one slightly exceeds six inches. A still larger specimen was obtained 

 near Apalachicola, at station 2373. 



G a S T R O P S E T T A , new jijenus. 



This genus is closely allied to A}ic!/lopsetta, from which it differs in 

 form of body, and also in having entirely smooth scales, singularly 

 branched and produced anterior dorsal rays, and very short and broad 

 gill-rakers. 



Diagnosis. — Body oblong-ovate, highly arched in front, covered with 

 small, cycloid, imbedded scales; lateral line arched in front, detiected 

 downward on caudal peduncle. Teeth small, in a single series in each 

 Jaw. Dorsal fin beginning in "advance of eye, its anterior rays pro- 

 duced, not connected by the irregular and broadly fringed membrane. 

 Gill rakers very short, almost as broad as long, few in number. Ven- 

 tral of eyed side produced, ending in a long filamentous ray in the 

 young. 



GASTROPSETTA FR( )NTALIS, new species. 



Diagnosis. — Length of specimen, 209 mm. ; depth, 80 mm. ; head, 44 mm. ; 

 middle caudal rays, 38 mm.; I). 00; A. 48; Y. G; P. i, 10. Eyes large, 

 3|^ ill head ; mouth of moderate size, maxilla 2^ in head, the jaws curved ; 

 interorbital ridge prominent, very narrow. The dorsal begins in front 

 of eye on snout, its anterior rays singularly branched, the third and 

 fourth longest, almost equaling length of head. Anal fin beginning at 



Proceedings of f ho U. S. Xatiouiil Museum, Vol. XVII— Xo. 1000. 



633 



