246 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



Measurements. 



[Species, Gadus morrhua.] 



Current number of speci- 

 mens 



Locality 



Extreme length to caudal 



base 



Length to end of middle 



caudal rays 



Body: 



Least height of tail. . . 

 Head : 



Greatest length 



Width of interorbital 

 area 



Length of snout 



Length of barbel 



Length of maxilla .... 



Length of mandible 



Diameter of eye 



Dorsal (first) : 



Length of longest ray 

 Pectoral: 



Length 



Ventral : 



Distance from snout.. 



Length 



Dorsal 



Anal 



Ventral 



28627 

 Davis Straits. 



286:;8. 



Holsteinburg, 



Greenland. 



Millime- 

 ters. 



395 



427 



21 



109 



30 

 37 

 19 

 45 

 53 

 19 



53 



62 



113 



53 



15, 20, 19 



20,18 

 6 



lOOths 



of 

 length. 



Millime- 

 ters. 



5.3 



27.6 



7.6 

 9.4 

 4.8 

 1L4 

 13.4 

 4.8 



13.4 



15.8 



28.6 

 13.4 



250 



275 



15 



68 



17 

 22 

 12 

 26 

 33 

 14 



35 



38 



70 



38 



14, 19, 18 



21,17 



6 



lOOths 



of 

 length. 



27. 2 



6.8 

 8.8 

 4.8 

 10.4 

 13.2 

 5.6 



14 



15.2 



28 

 15.2 



226570 



Gloucester, 



Mass. 



Millime- 

 ters. 



350 



384 



21 



98 



24 

 32 

 18 

 37 

 46 

 18 



52 



53 



95 



45 



14, 18, 19 



19,18 



6 



lOOths 



of 

 length. 



28 



7 



9.1 



5.1 

 10 6 

 13 



5.2 



15 



15.2 



27.1 

 13 



2i;657b. 



Gloucester, 



Mass. 



Millime- 

 ters. 



330 



360 



19 



96 



23 

 31 



18 

 36 

 46 



18 



50 



50 



89 



47 



13, 18, 20 



20,19 



6 



lOOths 



of 

 length. 



5.8 

 29 



7 



9.5 



5.5 

 11 

 14 



5.5 



15.1 



15.1 



27 

 14 



Gadus ogac Rich. 



Gadus ogac Riciiardsox, Faim. Bor. Amer., iii, 1836, p. 246. 



Gadus ovak Reinhardt, Vid. Selsk. Natiirvid., Math. Afh., deel. vii, 1838. 



Gadus ogat Kroyer, Yoy. eu Scand. et Laj)., pi. 19. 



34184. Godhavii, Greenland. H. G. Dresel. Lengtb, 190 millimeters. 

 34387. GodbavD, Greenland. H. G. Dresel. Length, 424 millimeters. 

 29096 {a). Greenland. Dr. Pavy. Length, 445 millimeters. 

 29096 (b). Greenland. Dr. Pavy. Length, 420 millimeters. 

 29096 (c). Greenland. Dr. Pavy. Length, 420 millimeters. 



The specific distinction of G. ogac from the common cod, G. morrhua, 

 is based on several imiiortant characters. Those least subject to varia- 

 tion are as follows: In G. ogac (1) the caudal peduncle is more slender, 

 (2) the eye is comparatively larger, (3) the interorbital width is greater, 

 (4) the barbel is longer, (5) the position of the ventral fins is more ad- 

 vanced, and (0) the pectoral fin is longer than in G. morrhua. 



The color is dark, blackish-brown above, lighter below, with yellow- 

 ish marblings. The tips of the dorsal, anal, and caudal fins are black. 

 The veutrals and pectorals are dark-brown or black ; a dusky spot on 

 the axil. The barbel is black. 



On comparing the following table of measurements of G. ogac with 

 that of G. morrhua the distinctions above mentioned are brought out. 



