Some new localities for Polyartemia 
forcipata Fischer and Branchinecta 
paludosa (O. F. Müll.) in Sweden. 
By 
O. Lundblad. 
During zoological excursions in northern Sweden last 
summer I had the opportunity of observing the two above 
named arctic Phyllopods. The hitherto but little studied 
distribution of these animals in Sweden as well as the fact, 
that my own localities are situated, for Polyartemia nearly 
two and for Pranchinecta more than four parallels farther to 
the south of the previously known, are the reasons for this 
little paper. 
The two Phyllopods are found in the province of Härje- 
dalen, the southernmost arctic alp-region in Sweden. They 
are observed in the northern part of the highplateau, that 
is extending round the mountain Helagsfjället (about lat. 62° 
55 N.). The height of the alp-plateau above the level of 
the sea (from about lat. 62° 43° —62° 55 N.) varies a little 
between 900 and 1100 meters, the southern part descending 
into Regio subalpina (the birch zone), the most part of the 
plateau, however, being situated above the limit of trees (Re- 
gio alpina, including the willow and lichen zones). Regio 
alpina is the specific »arctic zone» (EKMAN), the true high-alp. 
This region especially affords pure arctic conditions. The 
snow-melting here takes place very late in the year, and in 
the middle of July snowdrifts still are remaining at many pla- 
ces, often on the shores of the highest ponds and lakes, and 
in some of them ice-floes are svimming about. At a height 
of 1000—1100 metres spring generally comes in the end of 
