ANTARCTIC FISHES OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 287 



(2) Chxnichthys rugosus, sp. n. 



Eye smaller than in C. rhinoceratus, diameter 8 in head. Head rougher and 

 supraorbital edges more elevated. Maxillary shorter, not quite reaching middle of 

 eye. Dorsal VIII, 30 ; third and fourth spines longest, fifth as long as first. Anal 29. 

 62 plates in upper lateral line ; a nearly continuous series of plates on middle of side. 



A specimen of 400 mm. from Kerguelen. 



A stuff'ed example with VIII, 34 dorsal and 30 anal rays, and 72 plates in the 

 lateral line, appears to belong to this species. 



4. Parachsenichthys, Bouleng., 1902. 



"Southern Cross" Pisces, p. 176. 



Differs from Chsenichthys in the absence of the spinous dorsal fin. 

 South Georgia ; Graham Land. 



Parachsenichthys georgianus. 



Chxnichthys georgianus, Fischer, Jahrh. Hamburg Wiss. Anstalt, ii., 1885, p. 50, pi. i. figs. 1, 2. 

 ? „ charcoti, Vaillant, Exped. Aniarct. Fran^aise, Poiss., p. 39, fig. 



Maxillary not nearly reaching the vertical from anterior margin of eye. Inter- 

 orbital region narrow, its width less than J the diameter of eye. Dorsal 44. 

 Anal 32. 



South Georgia ; Graham Land. 



Total length 490 mm. 



It seems probable that the imperfect fish described by Vaillant, from Graham 

 Land, belongs to this species. The figure of the upper surface of the head is at first 

 sight rather different from Fischer's, but the differences may be due to the expansion 

 of the jaws and opercles and the smaller size of the specimen (head 136 as against 

 173 mm.). 



5. Chsenocephalus, gen. nov. 



Body naked, elongate ; two lateral lines without distinct bony plates. Eye some- 

 what behind middle of head ; a small prominence at anterior end of ethmoid ; jaws with 

 small sharp teeth forming rather broad bands, there being several series even at the 

 sides ; lower jaw not projecting ; gill-rakers absent except for 3 or 4 very short 

 ones below the angle of the first arch. Spinous dorsal fin well developed, its base 

 about \ that of the soft dorsal, from which it is separated by an interspace ; pelvics 

 comparatively short, with the two outer rays the longest, enveloped in thick skin, 

 but bifid, the others normally branched. 



South Georgia. 



