42 
the surface, while it was absent from the higher strata. In one 
case, however, a single specimen seems to have been found at 
the surface, viz. at stat. 23, whence ”fone large Sagittaf is men- 
tioned in the journal (temp. 29,85, sal. 34.60 ”/oo at the surface). 
A comparison with the hydrographical journal shows, that every 
specimen (with one exception, mentioned below) has been found, 
where the salinity of the water was at least 33.9 "/00; in several 
cases the temperature has been very low, though always positive. 
There is one exception, however, when the species was found at a 
lower salinity and at a negative temperature, viz. at stat. 30b in 
the southern part of the Davis Strait. 60 specimens were here 
taken at a temperature of — 09,5 and a salinity of 33.3 %/oo by a 
haul with 70 m wire. By a haul of the same duration and at the 
same locality but with 500 m wire (about 300 m below the sur- 
face, temp. ca. 37, sal. ca. 34.7 "/00) 685 specimens were found. In 
this depth, accordingly, the species has been very abundant, and 
movements of the water has then brought up some specimens to 
a higher stratum, where they are really not at home, 
Sagitta maæxima lives in considerable distance from the land; 
it may be carried towards the coast by the current, but it does 
not seem to thrive near land. In Umanåk. Fjord 22 specimens 
were taken with 800 m wire, 8 specimens with 450 m wire, 
i. e. in water with positive temperatures and a salinity of more 
than 34 9/00, water originating from the deep of the Baffin Bay. 
One single individual was taken in Skovfjord on August 4th 1909 
with 350 m wire (temp. 1756, sal. 33.87. 7/00 in 200 m). With 
these two exceptions the species was never found in the neigh- 
borhood of the coast, in any case no specimens are present in the 
preserved material from the coastal region, and the journal does 
not mention any "large Sagittas" from that region. 
The material of $. maæima from the "Tjalfe" expedition rend- 
ers no subject for thorough investigations as to the development 
of the sexual organs, as very few mature specimens are present. 
These few specimens seem to prove, that the species is strongly 
protandric. This will be' seen from the following notes on the five 
largest specimens from Umanak Fjord (all measurements in mm): 
