THE N^w YORK' 



A r or scisNces. 



Vol. XLVI. LONDON, APRIL, 1914 No. 4 



A SYNOPSIS OF THE GENERA IN CHLOROPID/E, FOR 



NORTH AMERICA. 



J. R. MALLOCH, URBANA, ILLINOIS. 



Having had occasion recently to identify species of North 

 America Chloropida?, I found some difficulty in placing the speci- 

 mens in their proper genera by the use of the published keys to the 

 family. The most recent papier on the Chloropidae is that by 

 Becker,* which is a rather unsatisfactory one, lacking in many 

 details, though it purports to be a "monographic" treatise. About 

 a dozen North American species are left out of the paper, and the 

 table of genera in the Chloropinae is so framed that it is not possible 

 to locate specimens generically. I do not purpose criticising 

 Becker's work, believing that criticism alone is seldom beneficial, 

 and offer the following table, which I hope will prove useful to the 

 extent of satisfactorily locating specimens in the genera to which 

 they belong. 



I have to thank Dr. S. A. Forbes for permission to publish this 

 paper 



Generic Synopsis: 



1. Costa reaching to third vein or slightly beyond it 2 



Costa reaching distinctly to fourth vein 13 



2. Outer cross-vein absent Elliponeura Loew. 



Outer cross-vein present 3 



3. Hind femur much thickened, hind tibia bent. . 4 



Hind femur not thickened ; hind tibia straight, or almost so ... 5 



4. Third joint of antennae much elongated, about four times as 



long as broad; veins 2 and 3 but slightly bent 



forward Neodiplotoxa, n. gen. 



Third joint of antennas but little longer than broad; veins 2 

 and 3 much bent forward Meromyza Meigen. 



*Ann. Nat. Mus. Hung., 1912. 



