270 



Dipterological Nomenclature. 



Bj G. H. Verrall, Newmarket (England). 



It is niust unfortiiiiate for üipterology that a iiiaiiia seenis 

 to have arisen for propusing- new names for Genera lipon the slightest 

 siispicion of preoccupation. This has been especially uoticeable with the 

 genus l^silopus, in which author after author has taken it for granted 

 that M ei gen 's generic name had been preoccupied. I have persistently 

 retained the name for the Dolichopodidgenus, hecanse I had no 

 proof of any older iise of the name. It is now stated that Poli's 

 Molhiscous name of 1795 was not iised in a generic seuse and that 

 therefore after all Meigen's name can remain. 



Latreille's genus Epliippiurii has been changed to Ephip- 

 pioinijia lipon the vagne statement that the word Ephippium had 

 been iised in some previously iinrecorded work, bnt not the slightest 

 eflfort has been made to test the supposed older generic term. Again 

 CUiellaria (1803) has been proved to be older than Eph/ppiu»/, 

 becaiise Schiner gave 1809 as the date of Latreille's fonn- 

 dation of his genus, but a very slight examination woiild have shewn 

 that Latreille's genus was founded in 1802. 



This year Prof. M. Bezzi in Heft 11, p. 51 of this Magazine 

 has dealt with several generic names in a most unfortunate manner. 



1. Cerochetas A. M. C. Dumeril (1816) 1823. This genus 

 was founded by Dumeril in Zool. Anal. 282 (1806), and until 

 proved to be validdoes not require to be^amended to Ceratochaetus, 

 a name which has already been used and which is therefore inad- 

 missible. 



2. Ceyx A. M. C. Dumeril (1801). This genus cannot super- 

 sede Calobata until its original description is collated and then it 

 will probaldy be found to have no species connected with the genus. 

 Somebody has identitied it with Hfjdrophont.'-; but the figure in 1823 

 is unmistakably a Calobata. 



3. Chrysopsis A. M. C. Dumeril 1823. This mis-spelling 

 was also used by Dumeril in 1806. 



Wiener Biitomologische Zeitung, XXVI. Jahrg., Heft VII, VIII und IX (20. August 1907). 



