22 EINAR LÖNNBERG, (Schwed. Südpolar-Exp. 
Transversely banded 
Yellow specimen 
specimen from 
from Tierra 
del 
the 
Falklands. 
Fuego. 
Total length 
74 mm. 
60 mm. 
Length of head * ' . 
% of total 
length 
18.9 % 
18.3 % 
Greatest depth of body 
» 2> 
» 
» 
13.5 » 
11,6 » 
Depth of body at the origin of anal fin . . . . 
. > 
» 'i> 
» 
» 
10,8 » 
10, 0 » 
Distance from snout to origin of anal fin ... . 
. » 
» » 
» 
44,5 » 
39,1 » 
Distance from origin of anal fin to tip of tail . . 
. » 
» » 
» 
» 
55,4 » 
58,3 3 
Distance from base of pectoral to vent 
. ■>' 
» » 
» 
27,0 » 
20,0 » 
Length of pectoral 
» » 
» 
» 
10,8 » 
IO, 0 
Length of snout 
» 
* 
» 
5,4 » 
4,5 » 
Diameter of eye 
» V 
■» 
3,3 » 
3,3 » 
Interorbital breadth 
» » 
» 
» 
3,3 » 
4, 1 't> 
Although the relative dimensions 
of head 
and 
eye 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 different 
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 fimbriatus JENYNS, 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 KlRWAN. 
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 Salmo alpinus 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 Salmo 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 1886. 
