110 NATURAL HISTORY OF ARCTIC AMERICA. 



6. Gadu3 ogac Rich. 



Gadus oijac RiCii., Faun. I3t)r. Anicr., iii, 183G, p. 246. 



Gadua ovak Rudt., Vid. Selsk. Naturvid. og Math. Afh., deel vii, 1838. 



Gadua ogal KrOyek, Voy. en Scand., &c., pi. xix. 



21723. (1417.) S Godthaab, Greenland, August 11, 187b. D. 13, 19, 22. A. 22, 

 21. V. G. Length of specimen 330 millimetres. 



A black spot on the second dorsal, 5 as long as the eye, between the 

 thirteenth and fifteenth rays. 



21724. (1418.) 5 Godthaab, Greenland, August 11, 1878. D. 14, 18, 20. A. 20, 

 18. V. G. Length of specimen 359 millimetres. 



The lateral line shows an interruption, measiuiiig- 22 millimetres on the 

 left side, the right being normal. The first jmrtiou of the lateral line 

 ends at the vertical through the interspace between the first and second 

 dorsals X the second portion begins at the vertical let fall from the sixth 

 ray of the second dorsal. 



21725. (1419.) 9 Godthaab, Greenland, August 11, 1878. D. 14, 17, 18. A. 19, 

 20. V. G. Length of specimen 300 millimotrcR. 



Richardson records this species at Cape Isabella, Peninsula of Boothia. 



Gadus ogac Rich., may be only a variety of G. morrhna Linn., as 

 claimed b}' Dr. Giinther; but after examining many .specimens of the 

 latter species and comi)aring them with Mr. Kumlien's examples, I prefer 

 to consider these distinct from G. morrhna and identical with Richard- 

 son's species. It may be that a larger series would lead me to the same 

 conclusion reached by Dr. Giinther. I have studied all the common cod 

 in the United States iS'^ational 3Iu.seum, a very large series, recently in- 

 creased by the addition of a monster weighing 100 pounds, jind find that 

 Gadus ogac is distinguished from G. morrJnio by seveial iiiiit(Mt;int char- 

 acters, among which are (1) a more slender caudal peduncle ; (2) a longer 

 l)arbel ; (3) a larger eye; (4) a greater distance between the eyes; (5) a 

 longer pectoral; and ((I) tlie jiiore adviinced ]>ositi(»n of the ventrals. 

 These tliflferences may be seen in flie i:il>les of ineasureiuents, in which 

 are given the proportions ol' i»;irts of Ihe Itodx in liiiiidrcdtlisol' tlie total 

 length without the caudal. 



The general color of Mr. Kuiulien's specimens is very dark brown, and 

 the sides arc marbled with white. 



