446 DEEP-SEA FISHES OF THE ATLANTIC BASIN. 



The type .specimen (Cat. No. 2G003, U. S. N. M.), ft!) iiiillimeters in lenj;tli, was taken 

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

 of irw fatlionis, and from station 871, in 40o 02' 5-i" N. lat., 70^ 23' 40" W. Ion., at a deptli 

 of 11.") fathoms. Tlie Albntrosn obtained examples from station 2318, in 24° 25' -45" N, lat. 

 81° 46' W. loM., 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 fiithoms; from station 2402, in 28° .30' X. lat., S.5o 33' 30" 

 W. Ion., at a depth of 111 fathoms; from station 2404, in 2«o 44' N. lat., 85° 16' W. Ion., 

 at a depth of 00 fathoms; and from station 2417, in 33° IS' 30" N. lat., 77'= 07' W. Ion., at 

 a depth of 95 fathoms. 



CITHARICHTHYS MICROSTOMUS, Gill. 



Cithai-kkthys microslinniis, Gnx, Proc. Acad. Niit. Sci. Phila., 1864, 223. 



CitharU-IUhyn spiloplvrus, Jordan aud Gilbert, Bull, xvi, U. S. Nat. Mns., 817 (uot Giinther.) 



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

 the caudal iieduncle about 11 times. The head forms a fifth of the length, is rather 

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

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

 The eyes are even; the longitudinal diameter contained about 3f times (.05i) 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 fifths of the head's length. The teeth are very 

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

 orbit aud 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 

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

 and contained only 6§ 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 fins are also uneipially 

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

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

 stretched backwards it extends to the second anal ray; the fin 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. 



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



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 largo .scales, 

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

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

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

 with Citharivhthiis spilo2)t(ri(s of Giinther, a species inliabiting the Gulf of Mexico. 



As the name Citharichihys wasjirobably introduced a. short time before Orthopsetta, pro- 

 posed for the J'sctfivhthys aordidus, and was framed for a species related to that type, that 

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



We may here remark that, although 1 have referred the Platessa quadrocularis of Storer 

 to the genus Cluvnopsetta^ {C. oblongn), it is possibk'. that it may not truly belong to that 

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

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



