197 



sary to call special attention. It is rather doubful if my species 0. stieticus is 

 identic with .4. nigrinus, a species which according to the description is always 

 difficult to determine. The species 0. salinellus Edw. has not hitherto been men- 

 tioned in this work, but must now, most probably, be registered among the 

 Danish species. 



After I had sent Dr. Edwards my 0. prodotes material from Amager he called 

 attention to the fact that the specimens differed somewhat from the true 0. prodoies; 

 I tried to get some males, but without success; later on Dr. Edwards wrote to me 

 that the specimens must most probably be regarded as a new species for which he 

 would propose the name salinellus. Later on he told me that these specimens were 

 identic with A. terriei Theob. and more thoroughly described by Martini (1920 4 

 p. 112). It is therefore now necessary to register the species among the Danish 

 mosquitoes; with regard to the description I refer the reader to Martini. With 

 regard to the chapter relating to the single species of Culicines I wish to call at- 

 tention to the following facts. 



Aides diversus Theo. = 0. rusticus (Rossi). Martini maintains that Meinert's 

 figure of C. nemorosus belongs to this species. I think that this may be correct and 

 confess that I have overlooked this fact. 



Aedes nemorosus Mg. = 0. communis (Deg.). It is of interest that Martini has 

 shown that below the withered leaves in the dried ponds other leaves were found 

 which were still moist; between these moist leaves "fanden sich Unmengen von 

 Nemorosus-Larven und Puppen, so dasz man den Eindruck hatte, die Entwicklung 

 ganz grosser Larven gehe fast ungestort weiter". 



Aedes si/lixe Theob. = 0. punctor (Kirby). Martini states that the home of the 

 larva is "in Torfmoorgraben zwischen Gras und Fadenalgen" not in drying ponds 

 in forests. This may be true, but I must confess that I have never found these 

 larvae there. 



Aedes terriei see above. 



Aides dorsalis Mg. = 0. caspius (Pallas). It is of interest that also Martini has 

 shown the remarkably severe attack of this species in the autumn, a long time after 

 the other mosquitoes have ceased to sting. 



Aedes vexans Mg. It is highly remarkable that this species, which has a parti- 

 cular significance for large parts of Central Europe, hardly seems to exist in our 

 country; the same seems to be the case in Great Britain. 



C. pipiens. Martini states that MOhlens has counted about 10.000 specimens 

 in one square meter in the hibernating places; he supposes that the species has 

 about four to six generations in Germany. He mentions the enormous swarms of 

 C. pipiens males in autumn; swarms which are indicated to be "Tausende von Metern 

 lang". Martini has observed one of more than 1 km. in length. Phenomena of this 

 kind have hitherto been quite unknown in our country. He has made the same 

 observation as so many others that C. pipiens only rarely sucks upon man and 

 mainly upon birds. 



