BULLETIN 



OF THE 



BROOKLYN ENTOMOLOGICAL SOCIETY 



Vol. XVI June-October, 192 i Nos. 3 and 4 



A RECLASSIFICATION OF THE SUBFAMILIES AND GEN- 

 ERA OF THE NORTH AMERICAN SYRPHIDAE. 



By Raymond C. Shannon, Bureau of Entomology. 



(Published by permission of Chief of Bureau of Entomology.) 



The present classification is very largely based upon the original 

 collection of Syrphidae used by Williston when writing his 

 "Synopsis of North American Syrphidae." This collection, now 

 in the U. S. National Museum, and supplemented by the accumu- 

 lated material, both European and North American, of more 

 recent years has supplied the writer with genotypes of all but 

 twenty-four genera. Where genotype material was not available 

 well-known species of their respective genera were resorted to. 

 Access to several rare species was obtained through the kindness 

 of Dr. J. M. Aldrich and Mr. C. T. Greene. In addition, the 

 collections of Cornell University, the joint collection of Dr. E. G. 

 Anderson and the author, as well as the collection of Mr. W. R. 

 Walton, which he has given to the National Collection. 



I wish here to record my name as being among the long list of 

 young men whom Dr. Eugene A. Schwarz has favored with his 

 great kindness and assistance in many ways. Besides helping me 

 greatly in many indirect ways, Dr. Schwarz undertook to read 

 my manuscript, thus aiding greatly in smoothing the language, 

 insuring correct usage of terminology and helping in the construc- 

 tion of scientific names and phrases. 



Williston, in his well-known "Synopsis of North American 

 Syrphidae," 1886, page xiii, states : " While, as a general rule, the 



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