TABLE OF CONTENTS 
viii 
in this Chapter given a detailed account of its origin and pro¬ 
gress. In my “ Introduction ” (p. 20) there is an allusion to this 
very regrettable dissension. 
XXII Brauer and Mik.164 
An Account of their Opposition to my new System of 
Diptera followed by a Characterization of these two 
Dipterologists.164 
Both Brauer and Mik have been on the best terms with me 
until the publication of my article : “ On Prof. Brauer’s paper: 
Yersuch einer Characteristik der Gattungen der Notacanthen ” 
( Berl . Ent. Zeit., 1882), which provoked Brauer’s ire. After this 
publication Mik found himself in an embarrassing position be¬ 
tween Brauer and me. He wished of course to remain on good 
terms with the very sensitive Custodian of the Entomological 
Museum of the Imperial and Royal Academy of Sciences in 
Vienna, but at the same time, in his views, he was in most 
cases in accordance with me. In his capacity of a reviewer and 
critic of dipterological publications Mik began to sustain most 
energetically Brauer’s innovations in the classification of Dip¬ 
tera. As I fully understood Mik’s perplexities, I bore these 
indirect criticisms against me with perfect composure. When 
my turn came to criticize Mik rather severely (Berl. Ent. Zeit., 
1896, p. 323), he took it in good part, and we remained friends 
up to his premature death. The purpose of the Chapter 
“ Brauer and Mik ” is to point out the incongruities in Mik’s 
critical notices in the Wien. Ent. Monats. which arose from 
this, for him, awkward situation. At the same time this Chap¬ 
ter contains a detailed characterization of both of these dip¬ 
terologists and of their work. 
XXIII Xotice on the Circumstances of the Publication of two 
principal Works (1830, 1863) of Robineau-Desvoidy . 180 
My “Introduction” (p. 16, line 12 from bottom) contains an 
allusion to an almost forgotten document of which I had made 
use while inquiring into the circumstances of R.-Desvoidy’s first 
publication (in 1830) : it is the Report upon it, drawn up by the 
Committee of the Academy of Sciences in Paris in 1826, and 
which authorized its publication. The second of R.-Desvoidy’s 
works (dated 1863), having been published after his death by per¬ 
sons not familiar with the subject, contains some errors which 
it was necessary to point out in order to make the work service¬ 
able in future. 
XXIV Aerial and Terrestrial Diptera .192 
An attempt to define the adaptive structural modifications 
produced by the two life-habits of Diptera. 
Part Tlnrd of this “ Record" contains the List of my entomological 
publications. It is already prepared m manuscript, and will be jmblished as 
soon as possible. 
