446 DEEP-SEA FISHES OF THE ATLANTIC BASIN. 



The type specimen (Cat. No. 26003, IT. S. N. M.), 69 millimeters in length, was taken 

 by the Fish SawJc from station 870, in 40° 02' 36" N. lat., 70° 22' 58' W. Ion., at a depth 

 of 155 fathoms, and from station 871, in 40° 02' 54" N. lat,, 70° 23' 40" W. Ion., at a depth 

 of 115 fathoms. The A Ibatross obtained examples from station 2318, in 24° 25' 45" N. lat. 

 81° 46' W. Ion., at a depth of 45 fathoms; from station 2401, in 28° 38' 30" N. lat., 85 52 ; 

 30" W. long., at a depth of 142 fathoms; from station 2402, in 28° 36' X. lat., 85° 33' 30" 

 W. Ion., at a depth of 111 fathoms; from station 2404, in 28 c 44' N. lat., 85<: 16' W. Ion., 

 at a depth of 60 fathoms; and from station 2417, in 33° 18' 30" X. lat., 77 : 07' \Y. Ion., at 

 a depth of 95 fathoms. 



CTTHAKIt'HTIIYS MICROSTOMUS, Gii.l. 



Citharickthys microstomus, Gill, Proc. Acad. Nat. Sci. Phila., 1864, 223. 



Citharichthys spilopterus, Jordan and Gilbert, Bull. xvi. 1". s. Nat. Mus., 817 mot iHinther.) 



The height of the body enters about 2§ times (.36-.37) in the extreme length; that of 

 the caudal peduncle about 11 times. The head forms a tilth of the length, is rather 

 abbreviated, scarcely sinuous above the eves, blunt at the snout, which scarcely exceeds a 

 seventh of the head's length, and the rostral area is rhombic and not higher than long. 

 The eyes are even; the longitudinal diameter contained about .'!-; times (.l»5Ai in the head's 

 length. The mouth is rather small, the length of the upper jaw only equaling one fourth 

 of the length, and that of the lower two tilt lis of the head's length. The teetli are very 

 small and close together, larger in front. The dorsal commences above the front of the 

 orbit and is highest and convergent near the fortieth ray, which equals about one tenth of 

 the total length; the anal is highest at about the twenty-fifth ray, and is as high or even 

 higher than the dorsal. The caudal is rounded behind and forms about one-sixth of the 

 length. The pectoral tins are unequally developed, that of the dark side being prolonged 

 and contained only 6sj times in the total length, while that of the white side only equals 

 one-tenth of the same; the rays are also simple. The ventral tins are also unequally 

 developed, the rigid being on the abdominal ridge at its origin, rather in advance of the 

 opercular margin, ami with its longest rays contained about 14 times in the total length; 

 stretched backwards it extends to the second anal ray ; the tin on the white side is more 

 advanced, wider, and its rays longer, contained less than 12 times in the length, and 

 extends backward to nearly the third anal ray. 



Eadial formula: D. 81; A. 58; C. 4, 6, 5, 3; P. 10; V. 6. 



The scales are large, angular behind, covered with smaller ones, especially near the 

 point of conjunction of contiguous ones, where alone they are developed on the blind side; 

 the scales of the eyed side are mostly minutely ciliated behind, unarmed, however, near 

 the lateral line, the scales of which last are quadrate and mostly covered; the scales of 

 the blind side are less angular behind and unarmed. The lateral line runs through about 

 42 scales, while of longitudinal rows there are 10 above and 14 below the lateral line. 



The color is uniform reddish brown. A single specimen, little more than 3 inches 

 long, was first obtained by Prof. Baird at Beeseley's Point. It is especially distinguished 

 from its California relative, 0. sordida, by the shorter snout, small mouth, and large settles, 

 0. sordida having about 58 scales pierced by the lateral line and 18 rows above the lateral 

 line. Notwithstanding this great disparity in the size of the scales and mouth C. micro- 

 stomus appears to agree in most respects with the California fish, as well as generically 

 with Citharichthys spilopterus of Giinther, a species inhabiting the Gulf of Mexico. 



As the name Citharichthys was probably introduced a short time before Orthopsetta, pro- 

 posed for the Psettichthys sordidus, anil was framed for a species related to that type, that 

 name must be adopted if the 0. sordida is not regarded as generically distinct. 



We may here remark that, although I have referred the Platessa quadrocularis of Storer 

 to the genus Ckcenopsetta (C. oblonga), it is possible that it may not truly belong to that 

 genus, as the dorsal and anal fins are represented as increasing backwards till near their 

 ends, and the anterior dorsal rays are free at their ends; but as the species agrees so 



