Bd. V: 6) THE FISHES OF THE SWEDISH SOUTH POLAR EXPEDITION. 37 



The specimens of this interesting "pickerel-shaped" fish measured about 45 cm. 

 without caudal. The colour was brown above, somewhat lighter below, with nume- 

 rous roundish blackish dots on the back and the sides. 



10. Champsocephalus gunnari ' n. sp. 



7 specimens from stat. :;2, Cumberland Bay, South Georgia, depth 75 ni., clay 

 and algcE, temperature at the bottom -f 1,3° C. 14th of May 1902. 



2 specimens from stat. 32, South Fjord, Cumberland Bay, South Georgia, depth 

 195 m., clay mixed with stones, temperature at the bottom + 1,45° C. 29th of 

 May 1902. 



Similar to C/i. esox (GÜNTHER) in its general shape, but differing from the same 

 in many points, with regard to number of fin-rays, relative dimensions etc., and as 

 these differences are constant it appears to be the most correct proceeding to establish 

 a new species for the Champsocephalus from South Georgia. The relative dimen- 

 sions of the same and the discrepancies from Ch. csox shown by them become quite 

 conspicuous from the table of measurements appended. For the identification of the 

 fish from South Georgia even without the aid of careful measurements the following 

 diagnose may be sufficient. 



D. 9 (10^) I (37^) 38-40; A. 36-3S. 



.Snout and upper jaw shorter than in C/i. esox so that the posterior end of the 

 maxillary hardly reaches the vertical through the anterior margin of the pupil and 

 never beyond the same (in Ch. csox to the middle of the pupil). Eye larger than 

 in Ch. esox, only about 5 (or S'A) times in length of head, measured without the 

 opercular flap beyond the spine (in Ch. esox 6^/3 — 7'/2). Interorbital width without 

 supraorbital skin greater about 3V2 — 3V3 times in length of head (in Ch. esox 

 4V2 — 5 times). The profile contour continues to rise considerably behind the eye, 

 so that the height just in front of first dorsal equals the length of the snout and 

 half the diameter of the eye, while the height at the same place in Ch. esox is a 

 good deal shorter than the snout alone. Greatest thickness of head in the preoper- 

 cular or opercular region decidedly greater than length of snout (in C/i. esox much 

 shorter than snout). The opercle has at its posterior border two spines, the upper 

 one of which is alwaj's divided at least in two but sometimes in three points. Pec- 

 toral very long, normally reaching to fifth or sixth anal ray and even in females 

 with the bell}' distended by ripe ovaries reaching the second or third anal ray (in 

 Ch. csox never reaching anal). Height of first dorsal variable, but its longest rays 



' I take the liberty of nr.ming this fish r.fter Dr. J. GuNNAR .\ndersson who was the chief of the 

 expedition during its cruise to South Georgia. 

 ° in one specimen out of 9. 



