FISHES OP ARCTIC ALASKA. 



507 



31. Theragra chalcogramma (Pallas). 



We took but one specimen of this species at Chignik Bay, where it is not abun- 

 dant. Out of 150 codfish taken with the hand lines only two were of this species, the 

 rest Oadus macrocephaltis. Our specimen differs from the average, but we have little 

 doubt it belongs to this species. Its dorsal rays are 11, 16, 17; the anal 18, 17; the 

 ventrals reach three-fifths to vent; the interorbital space is wider than the diameter of 

 the eye; the coloration is dark. In the few rays and shorter ventral and wide inter- 

 orbital space it agrees with Theragra fuoensis (J. & G.) from Puget Sound, but in 

 coloration, high ventral fin, and in slender body it is like the Alaskan form. Below 

 we give noncomparative fin count: 



32. Eleginus navaga (Kolreater). 



Head, 3f in length; depth, 6; eye, 5f in head; snout, 3; interorbital space, 4J; 

 gill rakers, 20 or 21 in all; barbel small, equal to pupil; dorsals, 12 to 14, 18 to 20, 18 

 to 22 ; anals, 20 to 23, 20 to 23 ; scales small, 157 transverse rows above lateral line from 

 gill opening to first rudimentary caudal rays. 



Body slender and rounded, with a rather long head; the snout viewed from above 

 is rounded, but runs to a rather sharp point when viewed from the side; the lower 

 jaw is included; the fleshy snout projects beyond the maxillary, its length slightly 

 greater than that of the snout; the tip of the maxillary is on a vertical with the front 

 of the pupil; the articulation of the mandible with the quadrate bone is on a vertical 

 running midway between pupil and posterior edge of eye; the teeth are all slender 

 and curved backward, those in the upper jaw in several irregular rows, the outer row 

 regular and with slightly larger teeth; the teeth in the lower jaw are in a single row, 

 except in the front, where they are in a double row ; the teeth on the vomer are few 

 and about the size of the smaller teeth in the upper jaw; the gill rakers are moderate, 

 the longest not quite equal to the diameter of the pupil; the caudal peduncle is com- 

 pressed, its depth equal to diameter of eye; vent under front of second dorsal. The 

 pectoral fins do not reach the vent; their length contained If times in the head. 

 The ventrals reach halfway to vent; the second ray moderately produced. The flrsb 

 dorsal is highest; the distance between the second and third dorsals twice the distance 

 between the first and second. The caudal fin is very slightly concave. The third ray 

 of second dorsal is midway between tip of snout and base of middle caudal rays. Our 

 largest specimen 11 inches long, which is about the average. 



Color somewhat mottled, grayish brown above, light silvery below; the three 



