94 
SCANDINAVIAN FISHES. 
had given descriptions of this fish, and Geoffroy St. 
Hilaire the best figure then drawn. However, it is 
much less known than the Tunny, though it has the 
same wide range, having been found in Japan, the In- 
dian Ocean, the Red Sea, the Mediterranean, Brazil, 
and on the east coast of North America. 
The Tunnina never attains the same size as the 
Tunny. Risso gives 8 dm. as its greatest length. The 
specimen from Limhamn described by Nilsson is 83 
cm. long. The body is perfectly fusiform, a little 
more elongated backward than forward. In his Spolia 
Atlantica (1. c., p. 466) Lutken has given some mea- 
surements of two specimens, which on comparison with 
Nilsson’s measurements give the following indications 
of the changes due to age: 
o O 
Average. 
Length of the body in millimetres 
831 
620 
380 
604 
,, ,, head % of the length of the body 
24.o 
25.0 
25.3 
24.8 
Height ,, „ first dorsal fin .. ., ,, _ 
13.8 
13.4 
12.6 
13.3 
,, ,, .. .. .. head 
56.2 
53.5 
50. o 
53.2 
second .. body 
6.3 
6.G 
5.8 
6.2 
,, ,, ,, head 
26.5 
26.5 
22.9 
25.3 
,, ,, ,, anal body... 
(6.0) 
7.0 
6.3 
(6.4) 
„ „ „ „ •• head 
(25.0) 
27.8 
25.o 
(25.9) 
Length ,, pectoral body 
13.8 
13.7 
13.7 
13.7 
„ „ „ ventral „ ,, „ ,, ,, ,, ,, ,, „ 
10.4 
9.8 
10.5 
10.2 
Greatest depth of the body „ ., „ 
— 
25.8 
23.7 
(24.7) 
Diameter of the eye .. .. .. head.. 
(14.i) 
12.9 
15.6 
(14.2) 
Distance between the first dorsal fin and the tip of the snout in % of the length of the body 
26.9 
— 
— 
— 
Length of the head in % of the distance between the first dorsal fin and the tip of the snout 
90. o 
— 
— 
— 
Diameter of the eye in % of the length of the snout 
47.4 
— 
— 
— 
Among the most marked alterations due to age 
which appear from this table, is the increase in height 
of the two dorsal fins, especially of the first, in pro- 
portion to the length of the head. In this respect, and 
also in the forward position of the first dorsal fin, the 
Tunnina is the most developed of its family. 
The manner of life of this species, of which we 
have only the most scanty information, probably differs 
but little from that of the true Tunny, and it is taken 
together with the latter in the Italian madragues. Its 
flesh is said to be of a fine red colour and of good 
flavour; but like that of the other Tunnies it decom- 
poses rapidly and then, of course, becomes unwholesome. 
From its true home this fish has occasionally 
wandered to Scandinavian waters. One specimen was 
caught on the 29th of July, 1857, in the Sound oft 
Limhamn near Malmo, and is now preserved in the 
University Zoological Museum at Lund. Another was 
taken near the same place, off Humlebsek, in a bottom- 
net in October, 1878, and in August, 1881, four spe- 
cimens were caught in a herring-net among the islands 
off Christiania. 
