NO. 2133. FISHES TAKEN BY ''ALBATROSS," 1S8S— THOMPSON. 



447 



Species are the following: Absence of scales on the occipital line and 

 on the interopercle, fewer scales with pores in the lower lateral line, 

 and but five spines instead of six. The eye in specimens of a size is 

 markedly smaller in N. longicauda, new species. 



From N. hrevicauda Lonnberg this species differs in the much longer 

 and more slender caudal peduncle, the higher fins, and a number of 

 other different measurements as far as can be judged from the plate. 

 Regan ^ ignores the great depth of the caudal peduncle in N. hrevi- 

 cauda, and identifies what is apparently the present species as that 

 form. He, however, gives no character by which his specimens may 

 be differentiated from Notothenia longipes of Steindachner save the 

 nmnber of dorsal spines, and it is on this character that his form is 

 here identified as N. longicauda rather than N. longipes. Lonnberg's 

 plate and his text emphasize the depth of the peduncle in such fashion 

 that it is impossible to ignore it, in addition to the other apparent 

 differences to be seen from the plate. If the plate can be trusted, the 

 preorbital is deeper than usual, scales are lackilig on the subopercle, 

 and the interdorsal space is not wider than that between two spines. 

 In all these characters it differs from the present species, as also from 

 N. longipes. There is not the slightest tendency to vary in such a 

 marked way in any of the numerous specimens of Notothenia longipes 

 at hand or in those of the present species. 



Author's number .2 



Length to caudal base mm 



Body depth 



Eye diameter 



Dorsal 



Anal 



Scales in lateral line 



Notothniia longipes 



02-23 02-36 02-20 02-22 02-21 02-19 02-35 



0.165 



0. 10 



VI, 3-) 



33 



53+12 



70 



0.16 



0.11 



VI, 36 



34 



50+9 



85 



0.17 



0.10 



VI,34 



34 



51 + ? 



92 



0.15 



0. 00 



VI, 35 



33 

 52+7 



97 



0.16 



0.09 



VI, 36 



34 



(?) 



101 



0.18 



0.08 



VI, 35 



34 



53+10 



105 



0.16 



0. 085 



VI, 36 



34 



53+13 



Author's uuraljor.' 



Length to caudal base mm 



Body depth 



Eye diameter 



Dorsal 



Anal 



Scales in lateral line 



Notothenia longicauda. 



01-81 01-82 01-85 01-84 01-83 01 



72 



0.19 



0.08 



V,35 



32 



50+5 



73 

 0.20 

 0.08 

 V,35 

 32 

 49+5 



0.20 

 0.08 



V,35 

 33 



49+0 



82 

 0.20 

 0.08 

 V,34 

 33 

 49+6 



83 

 0.19 

 0.07 

 V,35 

 32 

 47+6 



100 

 0.21 

 0.07 

 V,35 

 33 

 49+7 



100 



0.20 



0.08 



V,35 



33 



50+? 



' Scottish Antarctic Expedition, p. 269. 



2 Localities: N. longipes all from Albalroxs .station 2770, near Hilly Point and Cape Watchmap, oia east 

 coast of Patagonia. N. longicauda from Albatross station 2771, north of Cape Virgins. 



