June 1894.] CoQUII.I.ETT. SYNOPSIS OK CKNUS SyMI'IIOROMVi A. 



SYNOPSIS OF THE DIPTEROUS 

 genus SYMPHOROMYIA. 



By D. W. CoQun,LETT, W ashino ion, D. (". 



The first representatives of this genus in Nortli America 

 were described in October, 1886; in that month Dr. Williston 

 published descriptions of two new species in the Transactions 

 Am. Ent. Society, Vol, XIII, page 2S7. In the following year, the 

 late M. Bigot, of France, published ilescriptions of what purported 

 to be six new species (l^ulletin Soc. Ent. de ?>ance, 1887, pages 

 12 to 15), each founded on a single specimen ; in a note, however, 

 he acknowledges that his picticornis and trivittata are synonyms of 

 of ^Viliiston's/AJ',^,■v'//.^■ and pachyccriu respectively. A careful study 

 of his descriptions indicates that aliipcs and coiiuUa refer to one and 

 the same species, and that this is but the female of /(('(•//tvvvv^v Will.; 

 fidvipcs appears to be but the other se.x of hilipalpis. This reduces 

 his six names to one — latipalpis. 



The following Table contains all the species of Syinphoioinyia 

 known to me as occuring in North America; types of the new 

 species have been deposited in the I'. S. National Museum. I am 

 indebted to Mr. W. .\. Snow, of the Kansas State University, for 

 kindly examining and reporting upon the types of Dr. AVilliston's 

 two species : 



Antennce black, the third joint yellowish ; palpi and halteres brown. 



Face of male bare, abdomen wholly black, shining . rj plagens Will. 

 .\ntenna; black, the tirst joint yellowish ; palpi and halteres yellow. 



.\bdomen of female opaque, gray pollinose, the si.xth and followin- 



segments yellowish .... \;] modesta, sp. n. 



Antenn;v; wholly yellowish, palpi also yellowish. 



Knob of halteres yellow, abdomen of female opaque, (^ 9 latipalpis /Ui^ol. 

 Knob of halteres black, abdomen of female shining . ';' I'Tiata, sp. n. 



Antennrc wholly black. 

 Females. 



Knob of halteres and palpi yellow, abihjnien shining except on the 



first segment, labella soft and broad . . johnsoni, sp. n. 

 Knob of halteres antl palpi black. 



Labella very slender, horny; a brown spot on thorax above 



each wing, abdomen opacjue . . . cruetlta, sp. n. 



I-abella broad and soft, no brown spots above wings, abdomen 



sub-shining pachyceras Will. 



