5234 LULEÅ. 



appearing striated near the veins by the 

 refraction of the sun's rays. The thorax 

 was hairy, especially underneath. Abdo- 

 men oblong, dotted with black at the 

 sides. All the other parts were grey. 

 While the insect feeds, it raises up its 

 hind feet into a horizontal posture. If I 

 stooped ever so little whilst walking in 

 the meadows, my nostrils and eyes were 

 filled with these gnats. 



June 22. 



I gathered a shrubby Willow, with 

 lanceolate downy leaves like those of 

 Elccag?ius. (This was Saliv areiiaria.) It 

 is rather a large shrub, but rarely rises to 

 the size of a tree. The leaves are furrowed 

 along the course of the veins, and convex 

 between them, slightly downy and of a 

 greyish green on the upper side ; clothed 

 Avith snowy woolliness beneath. The lower 

 scales of the bud nearly smooth above, and 

 very green. Stem smooth, almost flesh-co- 

 Joured, or pale brown ; the young branches 



