98 Part III. — Twenty -sii-th Annual Report 



G. ceglefinus. — The haddocks were obtained from Scottish waters, and 

 also from Iceland. The Scottish specimens, some of which were fresh, 

 the others preserved in formaline or alcohol, measured — 5 at 13, 6 at 14, 

 6 at 15, 16, 17, 4 at 20, 21, 21, 23, 25, 30, 36, 37, 37, 56, 56, 60, 61. 

 The haddocks from Iceland, which are known in the Aberdeen Fish 

 Market as "Jumbo Haddocks," were examined fresh ; they measured 72, 

 72, 73, 75, 76, 77, 77, 84 cm. 



G. merlangus (Diagram). — The whitings were from Scottish waters. 

 Some were fresh, the others preserved. They measured 5, 6, 6, 7, 7, 10, 

 11, 11, 12, 12, 16, 17, 4 at 18, 20, 20, 21, 21, 22, 23, 23, 24, 24, 35, 

 36, 46, 48 cm. 



G. poutassou (Fig. 4). — Most of the specimens examined had been got 

 by Dr. Fulton during his trawling experiments in the North Sea. One 

 large specimen, 37 cm. long, lent by Mr. Holt, was captured on the West 

 of Ireland, and the poutassou sent by Drs. Schmidt and Johansen were 

 got at 63°21'N. : 21°48'W. in the young-fish trawl, with 100 metres of 

 wire. All were preserved in alcohol or formaline. Their lengths were 

 as follows :— 9, 7 at 10, 7 at 11, 6 at 12, 8 at 13, 4 at 14,^6 at 15, 

 3 at 16, 17, 17, 37 cm. 



G. argetiteus (Fig. 2). — Some sent by Mr. Holt were got 80 miles 

 W.N.W. of Cleggan, Co. Galway, Ireland, 11th May, 1905 ; the others, 

 from Drs. Schmidt and Johansen, came from 57°32'N. : 7°E., 31st May, 

 1907. Two had been captured by Dr. Fulton. All were preserved in 

 alcohol or formaline. They measured 6, 7, 7, 8, 8, 9, 10, 10, 11. 12, 13, 

 14, 15, 17 cm. 



G. saida (Fig. 3). — The specimens of this species were preserved in 

 alcohol. Three were obtained by Professor Vanhoffen at Karajak 

 Greenland ; the fourth, from Dr. Breitfuss, was got in the Barents Sea 

 They measured 16, 16, 17, 19 cm. 



G. ogac (Fig. 1). — Two specimens, measuring 63 cm. and 33 - 5 cm. in 

 length, had been obtained in Greenland. The former was captured by 

 Professor Vanhoffen. The latter was lenb by Dr. Jungersen. 



G. navaga (Fig. 84). — One specimen of this species measuring 17 9 

 cm. was lent by Dr. Jungersen. 



The characters by which the fishes were tested consisted, as in the former 

 portions of the research, of measurements on the fish — Body-Dimensions — 

 and the enumeration of the Vertebrae, Fin-rays, etc. — Enumeration- 

 characters. These characters numbered in all 36. In addition, the 

 the species were compared by the shape of the skull, abdominal cavity, 

 and ovary — Internal characters. 



The work has been carried on by the same methods throughout, and 

 with identical characters. Some characters which were adopted in the 

 first two papers have been dropped, and a few characters connected with 

 the abdomen have been introduced. This has necessitated a further 

 examination of certain of the species already treated. 



External Characters— The Body -Dimensions. 



The body-dimensions which were recorded were of two classes— (a) 

 distances of certain points on the body from the anterior end of the 

 fish, and (b) girth at three points, and the dimensions of various organs, 

 e.g., the eye and fins. 



(a) The distances were all measured from the anterior end of the fish 

 when the mouth was closed. In some species this point was the premaxilla, 

 in others the mandible. The distance from the anterior end to each point 

 on the body was taken along the lateral axis. The lateral axis is the line 

 oining the anterior tip of the fish to the middle of tail — Y Z in diagram. 



