346 MR C. TATE REGAN ON THE 



(Swedish South Polar Exped., Fish., p. 45). I have named the species after Dr 

 LONNBERG in recognition of his kindness in sending me this and other specimens. 



2. Pleuragramma, Bouleng., 1902. 

 "Southern Cross" Pisces, p. 187 (1902). 



Closely related to Trematomus, differing especially in the very thin cycloid scales, 

 the absence of pitted or tubular lateral line scales, and the feebly ossified skeleton, with 

 parapophyses developed only on the posterior praecaudal vertebrae. 



Coasts of the Antarctic Continent. 



BOULENGER has placed this genus in the family Leptoscopidae, but it has no affinity 

 with Leptoscopus, and, on the other hand, is very near to Trematomus, A comparison 

 of Pleuragramma antarcticum with Trematomus newnesii shows a very close agree- 

 ment in external and internal characters, even to the number of fin-rays and vertebrae ; 

 the pectoral arch is precisely similar. In Pleuragramma the two lateral lines are 

 marked by scales with notched posterior edges, or, if the scales have been lost, by series 

 of pores. 



Pleuragramma antarcticum. 



Bouleng., I.e., pi. xviii. ; Vaillant, Exped. Antarcf. Franfaise, Poiss., p. 48 (1906) ; Pappenheim, 

 Deutsche Siidpolar Exped., xiii., Zool., v. p. 164. 



Depth of body 5 to 6 in the length, length of head 3 \ to 4. Diameter of eye 3| to 

 3f in the length of head, interorbital width 5 to 6. Lower jaw projecting ; maxillary 

 extending to below anterior J of eye ; upper surface of head naked ; cheeks and opercles 

 scaly ; 20 to 25 gill-rakers on lower part of anterior arch. Dorsal VI-VII, 34-37. 

 Anal 36-38. Pectoral truncated, J to f length of head. Caudal slightly emarginate. 

 About 55 scales in a lateral longitudinal series. Silvery, back darker ; sides and back 

 powdered with blackish dots. 



Graham Land ; Wilhelm Land ; Victoria Land. 



Here described from several specimens, 150 to 200 mm. in total length, including 

 the types of the species from Victoria Land (Southern Cross) and examples from near- 

 Cape Armitage, Ross Island, and from south-west of the Balleny Islands (Discovery). 

 VAILLANT gives D V, 39 ; A 38 ; Sq. 44, for specimens from Graham Land ; and PAPPEN- 

 HEIM, D V-VIII, 34-38 ; A 36-38 ; Sq. 56-60, for examples from Wilhelm Land. 



3. Notothenia, Richards., 1844. 



"Erebus" and " Terror" Fish., p. 5; Giinth., Gat. Fish., ii. p. 260 (1860). 

 Macronotothen, Gill, Proa. Acad. P/iilad., 1861, p. 521. 



Differs from Trematomus only in that the hypercoracoid foramen is margined below 

 by the hypocoracoid (fig. 3, 3, p. 331). 



Coasts of the Antarctic Continent and northwards to Patagonia, the Falkland 



(ROY. soc. EDIN. TRANS., VOL, XLIX., 264.) 



