195 



is a basis for the origin of a new type which, in the course of time, may perhaps 

 lose its connection with the maternal species and give rise to a new one. 



Nowadays I am inclined to see in our .4. maculipennis, neither a subspecies 

 nor variety or race, but only stocks of individuals geographically and culturally bound, 

 stocks which nowadays play upon other strings of their life instrument than those 

 usually used. If we get similar life conditions as in the first part of the former 

 century they will however immediately revert to their earlier manner of life. It is by 

 no means an "evolution durable" it is an utilisation of other physical and mental 

 properties but no "evolution d'habitudes acquises". Actually the connection with 

 man is nowadays in the main broken in our latitudes but the circle can be closed 

 again. The probability of the great epidemics occurring is really very small but 

 the deep lying real life conditions for these epidemics are the same nowadays as 

 formerly in as much as they are dependent upon the Anophelines. 



Postscript um. 



After the printing of the greater part of the manuscript of the Culicines I got 

 from Dr. E. MARTINI his excellent papers relating to the classification and biology 

 of German mosquitoes. I am glad to see that in many respects we fully agree. 

 Only with regard to the synonymy there are, as might be expected, great differen- 

 ces. In the following I have tried to collate Dr. MARTINI'S species with mine; I 

 suppose that the references will almost all prove to be correct, because, according 

 to a letter to me, Mr. EDWARDS has arrived at quite the same result. 



I add some biological remarks taken from the w r ork of Dr. MARTINI, especially 

 those which supplement my own observations or which strengthen my views where 

 this seems to be desirable. With regard to the Anophelines the work has been con- 

 sulted in the foregoing pages. 



Martini. W.-L. 



Aedes cinereus Mg A. cinereus Mg. 



lateralis Mg Ochlerotatus lateralis Mg. (?) 



serus Martini diantceus H. D. K. 



diversus Theob riisticus Rossi. 



nemorosus Mg. communis Deg. 



sylvce Theob punctor Kisby. 



terriei Theob salinellus Edw. 



salinus Fie detritus Hal. 



nigrinus Eck sticticus (Meig.) var. con- 



cinnus Steph.? 



annulipes Zett lutescens Fabr. 



25* 



