44 DISCOVERY REPORTS 



St. WS 108. 25. iv. 27. 48° 30' 45" S, 63° 33' 45" W. Large otter trawl, 118 m.: 1 specimen, 

 275 mm. 



St. WS 218. 2. vi. 28. 45° 45' S, 59° 35' W. Commercial otter trawl, 311-247 m.: 2 specimens, 

 705, 750 mm. 



St. WS 762. 16. x. 31. 43° 50' S, 65 01' 51" W. Commercial otter trawl, 67-65 m.: 3 specimens, 

 150-195 mm. 



St. WS 763. 16. x. 31. 44 14' S, 63° 28' W. Commercial otter trawl, 87-82 m.: 10 specimens, 

 100-260 mm. 



St. WS 776. 3. xi. 31. 46° 18' 15" S, 65° 02' 15" W. Net attached to back of trawl, 107-99 m - : 

 22 specimens, 150-225 mm. 



St. WS 788. 13. xii. 31. 45 05' S, 65 00' W. Commercial otter trawl, 82-88 m.: 25 specimens, 

 105-280 mm. 



St. WS 817. 14. i. 32. 52° 23' S, 64 19' W. Commercial otter trawl, 202-238 m.: 1 specimen, 

 900 mm. 



St.WS8i8. 17.1.32. 52° 31' 15" S, 63 25' W. Commercial otter trawl, 278-284 m.: 1 specimen, 

 960 mm. 



St. WS 855. 22. iii. 32. 45 58' 30" S, 64°n'W. Commercial otter trawl, 115-nom.: 12 

 specimens, 137-180 mm. 



St. WS857. 23. iii. 32. 47 11' 30" S, 64° 12' W. Commercial otter trawl, 122-124 m.: 1 specimen, 

 150 mm. 



No data. 1 specimen, 880 mm. 



For synonymy and description see below. 



A Revision of the Species of Merluccius 



The difficulty of distinguishing the species of this commercially important group 



of fishes has led me to undertake a revision of the genus. 1 Hake are to be found in both 



the North Temperate and the South Temperate regions, and, as far as I am able to 



judge from the material at my disposal, there are 3 species in the north and 4 in the 



south. 



Key to the species 



I. ioc to 150 scales in a longitudinal series; eye 4 to 7§ in head (in specimens of 100-960 mm.). 



A. 7 or 8 gill-rakers on lower part of anterior arch; pelvic as long as or nearly as long as 

 pectoral, which is if to 1 § in head merluccius. 



B. 10 to 18 gill-rakers on lower part of anterior arch; pelvic nearly always shorter than 

 pectoral. 



1. Pectoral not or scarcely reaching vent, if to if in head; 10 to 13 gill-rakers on lower 

 part of anterior arch; about 130 scales in a longitudinal series ... ... hubbsi. 



2. Pectoral extending to vent or beyond, i| to if in head. 



a. Depth of body 7 to 7§ in length; pelvic 2 \ to 2 \ in head, extending about § of 

 distance from its base to vent; 15 to 17 gill-rakers on lower part of anterior arch; 

 130 to 135 scales in a longitudinal series productus. 



b. Depth of body 5 to b\ in length; pelvic if to 2^ in head, extending § to § of 

 distance from its base to vent. 



a. 15 to 18 gill-rakers on lower part of anterior arch; pectoral with 15 or 16 rays; 

 no to 115 scales in a longitudinal series; first dorsal with n rays ... goyi- 



1 A good summary of our knowledge of the genus has been given by Belloc (1929, Riv. Trav. Peches 

 Marit., 11, p. 153). 



