22 EINAR LÖNNBERG, (Schwed. Südpolar-Exp. 



Transversely banded Yellow specimen 

 specimen from from Tierra del 



the Falkland?. Fuego. 



Total length 74 min. 60 mm. 



Length of head in ?^ of total length 18,9 " 18,3 % 



Greatest depth of body ? i 5 : j 13,3 » li,« » 



Depth of body at the origin of anal fin ? > » > > io,a » 10,0 » 



Distance from snout to origin of anal fin j 3 » > > 44,5 > 39^, > 



Distance from origin of anal fin to tip of tail ...» » 5 = 55,, . 58,3 > 



Distance from base of pectoral to vent 3 j > -.. 27,0 • 20,0 > 



Length of pectoral » » j ■> > 10,8 > lo.o » 



Length of snout » > » > > 5,4 ' 4,s » 



Diameter of eye j » » ; » 3:3 ' 3i3 • 



Interorbital breadth 1 .. ,- > • 3,3 » 4,' » 



Although the relative dimensions of head and e}-e of these two specimens are 

 the same, those of interorbital breadth and length of snout differ. The relation be- 

 tween the preanal and postanal portions of the body are also strikingly difterent 

 and so is the relation between the distance between pectoral and vent compared 

 with the total length. Provided now that my opinion is correct, when I regard the 

 specimen from Tierra del Fuego as the true Ilucocoetes fiiiibriatus Jenyn.S, the spe- 

 cimen from the Falklands must be, at least, a distinct subspecies. 



13. Haplochiton zebra Jenyns. 



7 specimens from freshwater at Mount Pleasant, Falklands, collected and pre- 

 sented to the Expedition by Mr. John Kirwan. 



This fish is known to the falklanders under the name "trout", which seems rather 

 suitable as it is an antarctic substitute for this fish, or perhaps better still for the 

 harr of the arctic or subarctic region. Haplochiton and Salino alpiniis live under 

 similar conditions of life and it is of very great interest to find that this has resulted 

 in producing at the opposite ends of the globe two fishes of almost identical shape 

 and with relative dimensions which are strikingly similar. To enlighten this I append 

 here the measurements of a couple of specimens of Haplochiton zebra from the 

 Falklands and put at their side the corresponding measurements of three specimens 

 of Salino alpinus from Northern Sweden and Lapland. The latter measurements 

 have been taken from the late Professor F. A. Smitt's work* "Kritisk förteckning 

 öfver de i Riksmuseum befintliga Salmonider". 



* K. Vet. Akad. Handl. Bd. 21 N:o 8. Stockholm 18S6. 



