344 MR C. TATE REGAN ON THE 



T. bernacchii of the same size. After comparing the type with examples of T. bernacchii 

 that I sent him, Dr LONNBERG writes that the caudal peduncle is notably deeper and 

 that the scales are larger. 



Dr LONNBERG has also sent me one of the types of N. dubia for examination. The 

 specimen is 50 mm. in total length, and is a Trematomus, with the head scaled as in 

 T. bernacchii, but with a smaller eye (3f in the length of head) and broader inter- 

 orbital region (G| in the length of head) than young examples of that species. I count 

 Dorsal V, 37. Anal 32. 55 scales in a longitudinal series, 30 in the lateral line. 13 

 gill-rakers on the lower part of anterior arch. It seems probable that this may be a 

 young example of T. vicarius, although the interorbital region is scaleless. 



(6) Trematomus bernacchii. 



Bouleng., "Southern Cross" Pisces, p. 181, pi. xiv. (1902). 



Notothenia elegans, Vaill., Exped. Antarct. Franchise, Poiss., p. 28 (1906). 



Depth of body 3 to 4 1 in the length, length of head 3^ to 4. Diameter of eye 3 to 

 4| in the length of head, interorbital width 5 to 9. Maxillary extending to below 

 anterior part or middle of eye ; occiput, cheeks, and opercles scaly ; interorbital region 

 naked or with a median series of scales ; 13 to 15 gill-rakers on lower part of anterior 

 arch. Dorsal IV-VI, 34-38. Anal 31-35. Pectoral about f the length of head; 

 pelvics just reaching anal in young, but not in adult. Caudal rounded. Caudal 

 peduncle deeper than long. 60 to 75 scales in a longitudinal series from above base of 

 pectoral fin to caudal, 30 to 42 in upper lateral line ; lower lateral line usually without 

 tubules. Large dark spots in 2 or 3 alternating series ; upper \ of spinous 

 dorsal blackish. 



Graham Land and neighbouring islands ; Victoria Land. 



Here described from several specimens, 90 to 340 mm. in total length, including 

 the types of the species from Cape Adare, 5 to 8 fathoms, and Duke of York Island, 

 near Cape Adare, 3 to 4 fathoms (Southern Cross), examples from the Discovery winter 

 quarters, Ross Island, and two from Station 325, Scotia Bay, South Orkneys, collected 

 by the Scotia. 



In this species the interorbital region seems to be always scaleless in the young, and 

 is often so in the adult fish. 



(7) Trematomus hansoni. 



Bouleng., "Southern Cross" Pisces, p. 180, pi. xiii. (1902). 



Tnmatomtu hansoni subsp. georgianus, Lonnberg, Swedish South Polar Exped., Fish., p. 25, pi. v. 



fig. 17 (1905). 

 Notothenia sima, Vaill., Exped. Antarct. Franchise, Poiss., p. 23 (1906). 



,, lepidorhinus (part.), Pappenheim, Deutsche Sudpolar- Exped., xiii., Zool., v. p. 169 



(1912). 



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

 3f to 5 in the length of head, interorbital width 5 to 6|. Maxillary extending to below 



(ROY. soc. EDIN. TRANS., VOL. xiax., 262.) 



