442 DEEP-SEA PISHES OF THE ATLANTIC BASIN. 



a depth of 26 fathoms; from station 2414, in 25° 04' 30" N. lat., 82° 59' 15" W. Ion., at a 

 depth of 26 fathoms; from station 2407, in 28° 47' 30" N. lat., 84° 37' W. Ion., at a depth of 

 24 fathoms. 



A closely related species, P. cornutu.i, was obtained by tlie Chnlleiu/er from stations 122 

 and 122 B, off the coast of Brazil, at depths between 32 and 350 fathoms. (Giinther, Chal- 

 lenger lieport VI, 7, pi. II, fig. B; xxii, 165.) 



CITHARICHTHYS, Bleeker. 



Citharichlhjis, Blkeker, in GOnther. Cat. Fish. Brit. Mas., iv, 420, 1862; and in Compt. Rend. Acad. Sci. 



Amsterdam, xm, 1862 (type, Citharichthys cayentiensis, Bleeker.) — Goode, I'roc. U. S. Nat. Mus., Ill, 



1880, ;U0.— JORDAX and Gilbert, Bull, xvi, U. S. Nat. Mus., 816 (part). 



Sinistral pleurouectoids with ovate body. Mouth large, the maxillary nearly half as 

 long as the head. Eyes sinistral, large, the uppermost not close to dorsal outline. Teeth 

 feeble, in single series, nearly equally developed on each side. Pectoral upon blind side 

 fewer-rayed, much longer than its counterpart. Ventrals asymmetrically placed, the sini- 

 stral one upon the median ventral line, that upon the blind side produced in the males. 

 Dorsal fin commencing in advance of the ey^s upon the snout, and upon the blind side of 

 the dorsal line. Dorsal and anal rays simple. 



Scales moderate, ovate, strongly pectinate, firmly attached. Lateral line of colored side 

 strongly arched over pectoral as in Limanda. Gill rakers short, rather sfcmt, tiexible, 

 Vertebrse 34 (in G. arctifrons). Gill membranes broadly united below the throat; gill rakers 

 lanceolate. Branchiostegals 5. 



CITHARICHTHYS ARCTIFRONS, (Joode. (Figures 366, A, B.) 



Cithariclilhys arctifrons, GooDE, Proc. U. S. Nat. Mus., iii, 1880, 341, 472. — Goode and Bean, Bull. Mus. Comp. 

 Zool., X, 194. — GOnther, Challenger Report, xxii, 1887, 165. 



The height of the body (37) is about three-eighths of its total length (without caudal), 

 and is equal to about 4 times the height of the tail (0) and about 5 times its thickness (7). 



The scales are irregularly polygonal, cycloid; the largest about 6 millimeters in diam- 

 eter; the diameter (5) nearly equal to that of the eye. The scales are flexible, loosely 

 arranged, and very easily detached, so that it is difficult to secure a specimen in good order. 

 Small scales on the rays of the ventral fins. There are 40 scales in the lateral line (on the 

 colored side), which is sharply defined and straight, and 7 or 8 above and the same number 

 below the lateral line at the broadest part of the body. 



The length of the head (24-24J) is about one-fourth that of the body, iiiid 1 times the 

 diameter of the eye (6). The interorbital space (1) is very narrow, ecpial to the difference 

 in the distances from snout to lower eye (4) and snout to upper eye (5). The length of man 

 dible (10-10^) is about double the latter distance; the length of the maxillary (7-7J) slightly 

 more than the greatest width of the body. 



The dorsal flu begins npon the snout, above the anterior margin of the upper eye. Its 

 greatest height (13-15) is about three times the distance of its anterior ray from the snout. 

 It is compo.sed of 82 to 83 simple rays. Tiie anal begins under the axil of the pectoral, its 

 greatest height (14-15) equal to or slightly exceeding half the distance of its anterior ray 

 from the snout. It is composed of 67 simple rays. 



The caudal is subsessile, triangular, of 16 rays; its length about etjual to that of the 

 he:id. In dorsal, anal, and caudal the rays appear to ])roJect beyond the connecting mem- 

 brane half or two-thirds of their own length. 



The pectorals are inserted far below the lateral line and close to the gill opening. The 

 pectoral on the colored side is <'omposed of more rays (0-10) than that of the blind side (7), 

 its length (17-19) being about double that of its mate (7-9). The ventrals are composed of 

 4 rays. 



Color dirty light brown. 



Radial formula: D. 82-83; A. 67; C. 16; P. 9-10, 7; Y. 5; L. lat. 40. 



