.042 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



Current nninbor of specimen 

 Locality 



25,908. 

 871. 



Milli- 

 meters. 



Extreme length 



Length to end of middle caudal rays. . 

 Body : 



Greate.'^t height of middle dorsal. . 



Greatest widtli 



Least height of tail 



Head: 



Gieatest length 



"Width of int.ernrbital area 



Length of snout to upper eye 



Length of maxilhiry 



Length of mandible 



Distance from snout to lower eye . 



Diaineter of orbit, longitudinal . . . 

 Dorsal (spinous) : 



Distance from snout 



Length of base 



I rreatest height, posterior J 



Anal: 



Distance from snout 



Length of base 



Height at longest ray, posterior ^ 

 Cau(hil: 



Length of middle rays 



Pectoral : 



Distance from snout 



Length 



Ventral: 



Distance from snout 



Length 



Dorsal 



137 

 111 



Anal 



C:*lal 



Pectoral • 



Ventral 



X umber of scales in lateral line, from root of ventral obliquely 



back 



Number of transverse rows above lateral line 



lOOths of 

 length. 



Milli- 

 meters. 



122 

 102 



38.5 

 7 

 9 



24.25 



1 



5 



7.25 

 10.25 



4 



6 



4.75 



lOOths of 

 length. 



25 

 17-9 



21 

 10 

 82 

 67 



9-7 

 5 



Citharichthys unicornis, new species. 



Extreme length of the specimen described (ISTo. 26003) 69 millimeters. 



The greatest height of the body (47) is slightly less than its length, 

 and is about 4| times its least height at the tail (11). The body is much 

 higher than in G. arctifrons, its greatest height over the pectorals, the 

 contours then descending in almost straight lines to the base of the tail. 

 The thickness of the body (G) is less than in C. arctifrons, bcnig contained, 

 nearly seventeen times in the standard length. 



Tlie scales are thin, deciduous, smaller than in C. arctifrons. There 

 are about forty scales in the lateral line, which is slightly curved over the 

 pectoral, and, as nearly as can be determined in the denuded specimens 

 before me, about twelve rows above and twelve below the lateral line at 

 the broadest part of the body. 



The length of the head (25) is one-fourth of the standard length and 

 about three times the diameter of the eye (9), or the distance from the 

 snout to the upper eye (9). The interorbital space is wide (4), equal to 

 the length of the snout, and diagonally crossed by a strong ridge, a con- 

 tinuation of two ridges which form the upper boundary of the lower 

 and the lower boundary of the upper orbit. 



The length of the maxillary (11) is less than half, that of the mandible 



