lo DISCOVERY REPORTS 



2. Praeorbital naked; snout naked or scaly; 8 to 13 gill-rakers on lower part of anterior 

 arch. 



a. 30 to 42 tubular scales in lower lateral line (except in young) ; pelvics shorter 

 than pectorals, scarcely reaching as far as vent; dorsal VII-VIII, 31-34; anal 

 31-34 5- gibberifrotis. 



b. Lower lateral line without tubular scales; pelvics longer than pectorals, ex- 

 tending as far as vent or anal fin. 



a. Upper surface of head scaly; dorsal IV-V, 34-37; anal 33-35 6. mizops. 



p. Upper surface of head naked ; dorsal I V-VI, 36-40 ; anal 34-36 7. midifrons. 



B. Pectoral with 19 to 21 rays; dorsal V-VII, 28-31; anal 27-31. 



1. Opercles fully scaled; pelvics reaching as far as vent; 54 to 60 scales in a longi- 

 tudinal series; upper lateral line of 36 to 39 tubular scales 8. acuta. 



2. Opercles scaly above, naked below ; pelvics not reaching as far as vent ; 46 to 52 scales 

 in a longitudinal series; upper lateral line of 26 to 35 tubular scales. 



a. Interorbital width 15 to 20 in head; dorsal V-VIII, 28-30; anal 29-31. 



9. angustifrons. 



b. Interorbital width 10 in head; dorsal VII, 29; anal 27 10. marionensis. 



II. Opercles scaled only on upper part of operculum ; upper surface of head naked. 



A. Anal of 26 to 34 rays. 



1. Interorbital width 5 to 6i in head; pectoral with 20 or 21 rays; cheek scaly below 

 and behind eye, its lower \ (young) or \ (adult) naked; dorsal I V-VI, 33-36; anal 

 30-34; scales ctenoid on body 11. cyanobrancha. 



2. Interorbital width 3I to 5 in head; pectoral with 17 or 18 rays; cheek scaly behind 

 eye; dorsal III-VII, 35-40; anal 27-31; scales cycloid on body 12. coriiceps. 



3. Interorbital width 2| to 3! in head; pectoral with 21 to 23 rays; cheek scaly behind 

 and to some extent below eye; dorsal I V-VII, 32-36; anal 26-30; scales cycloid 



on body i3- ''o^«^'- 



B. Anal of 22 to 25 rays; interorbital width 2 1 to 4 in head. 



1. Dorsal III- VI, 29-31 ; 50 to 60 scales in a lateral longitudinal series 



14. macrocephala. 



2. Dorsal VI-VIII, 26-27; 84 to 92 scales in a lateral longitudinal series ^^- '^^Ibecki. 



It has proved impossible to ascertain the true position oi Notothenia phocae, Richard- 

 son (1844, Zool. 'Erebus' and ' Terror' (Fish.), p. 8), and this must remain a doubtful 

 species. The examples mentioned by Richardson as having been preserved in spirits 

 no longer exist, and I have been unable to trace the drawing said to have been made 

 by Dr Hooker. The fish were all taken at 65° S, circa 155° W, from the stomach of 

 a seal, and ranged in size from 65 to 170 mm. in length (without the caudal fin). 



Notothenia squamifrons, Giinther. 



Notothenia squamifrons, Giinther, 1880, Shore Fish. 'Challenger' , p. 16, pi. viii, fig. C; Regan, 

 1913, t.c., p. 270. 



Depth of body 4^ in the length, length of head 3I. Snout shorter than eye, diameter 

 of which is 3 to 3^ in length of head ; interorbital width 9 to 12. Jaws equal anteriorly ; 

 maxillary extending to below anterior J of eye ; upper surface and sides of head, in- 

 cluding snout and praeorbital, scaly; about 5 rows of scales between the eyes; 14 to 16 

 gill-rakers on lower part of anterior arch. Scales on body cycloid or feebly ctenoid ; 

 55 in a longitudinal series from above base of pectoral to caudal, 44 or 45 in upper 



