64 



In the following year I was again examining Neiede Vesterskov, and the mea- 

 dows south of Arreso. The water-line had receded, but in the ditches there was 

 still plenty of water; in this I found many yellowish-grey larvae, from which was 

 hatched 0. lutescens on 2l/y. 23/ v when I was in the same locality, the meadows 

 were dry, and only a few holes had water. In one of them I found a great num- 

 ber of pupae, and in the grass over the pond plenty of newly-hatched O. lutescens. 

 On 29 /v the mosquitoes were on the wing, but they had not begun to bite. The 

 meadows were quite dry from 29/v to the latter part of October. On a visit in the 

 last part of June I was fiercely attacked by clouds of 0. lutescens which stung vigorously. 

 Another locality where I have studied this species is the southern coast of 

 the islands Lolland-Falster: Time: June. Here we find large meadows, bordering on 



the shores of the Baltic; in spring 

 the water goes over the mea- 

 dows, in summer they are com- 

 monly dry. Everywhere in the 

 large forests of Phrag mites, dee- 

 pest down in the old, now al- 

 most dry, fjords, often surroun- 

 ding smaller lakes, and in the 

 forests I found 0. lutescens in 

 enormous masses. I hardly ever 

 saw any other mosquito; more 

 especially on damp evenings, in 

 the large Phragmites svamp be- 

 hind the castle of Aalholm, the 

 mosquitoes were extremely trou- 

 blesome. Here, as well as near 

 Maribolake, and on the long 



peninsula of Knudshoved, on the southern coast of Seeland, I observed that the 

 species attacks cattle and horses much more than man. Near Maribo I had an 

 opportunity to make sure that 0. communis, cantons and lutescens were simultane- 

 ously on the wing. Whilst we in the forest were attacked by the two first-named, 

 O. lutescens attacked the horses in the meadow bordering the lake; more than forty 

 were simultaneously sucking one horse. 



On the island of Amager near Copenhagen man and cattle in the meadows 

 are attacked by clouds of 0. lutescens. In the Royal Museum of Copenhagen some 

 large yellow mosquitoes from Stsegers time are labelled C. annulipes. As we know 

 that Staeger has explored Amager with regard to mosquitoes, it is most probable 

 that these specimens really derive from this locality. Most probably the species is 

 widely spread over the whole island; at all events I have found it on both sea- 

 shores and in the middle. The island is bordered by numerous brackish pools, in 

 which the huge masses of 0. caspius and curriei are hatched. Often separated from 



Textfig. 7. The vast meadows at Aalholm. Lolland. O. lutescens. 



