ART. 9 AMERICAN XYLOTINE SYRPHID-FLIES SHANNON 11 



TROPIDIA MAMILLATA Loew 



Ty'pe locality. — Illinois; published records: Nebraska (Hunter, 

 Jones) ; Kansas (Snow, Hine) ; North Carolina (Brimley) ; ad- 

 ditional record: Chicago, Illinois, September 7, 1914 (A. Kwiat), 



Type. — In Museum of Comparative Zoology. 



TROPIDIA CALCARATA Wiliston 



Type locality. — Galesburg, Michigan (Dimmock) ; published re- 

 cords: New Jersey (Smith, Johnson); Northern Indiana (R. M. 

 Smith) ; material at hand: Swansea, South Carolina, on flowers of 

 yellow water lily, August 9, 1911 (F. Knab) ; Ann Arbor, Michigan, 

 June 26, 1917, on Crataegus (E. G. Anderson). 



Type. — In United States National Museum. 



TROPIDIA ALBISTYLUM Macquart 



Type locality. — North America; published records: New Jersey 

 (Smith) ; Florida (Johnson) ; flowers of Cephalanthus, Lake 

 Forest, Illinois (Needham) ; District of Columbia, Maryland, Vir- 

 ginia (Banks, Greene, McAtee, Shannon) ; North Carolina (Met- 

 calf ) ; additional records: Georgia (H. K. Morrison); White 

 Springs, Florida, October 18 (C. H. T. Townsend) ; Louisiana; 

 Wolf City, Texas, April 12, 1906 (F. C. Bishopp) ; Durant, Okla- 

 iioma, June 2, 1905 (C. R. Jones, F. C. Bishopj^). 



Type. — In Natural History Museum, Paris. ( ? ) 



TROPIDIA QUADRATA (Say) 



Type locality. — Pennsylvania. The commonest species of this 

 genus apparently occurring throughout the United States and south- 

 ern Canada. 



Type. — Lost. 



Genus SYRITTA St. Fargeau and Serville 



SYRITTA PIPIENS (Linnaeus) 



A cosmopolitan species, widely distributed throughout North 

 America. 



Type. — Linnaean Society of London ( ? ) 



SYRITTA OCEANICA Macquart 



May be found eventually to occur in southern America. 

 Type. — In Natural History Museum, Paris ( ? ) . 



AMERICAN SPECIES INCLUDED IN THE KERTESZ CATALOGUE UNDER SYRITTA, WHICH ARE 

 HBRE REFERRED TO OTHER GENERA 



S. aniericana Schmev— Planes vagans (Wiedemann)? 

 S. mexicana 'Bigot=Planes vagans (Wiedemann) ? 

 S. transversa Walker=Zowemj/Ja transversa (Walker). 

 8. vagans (Wiedemann) =P/anes vagans (Wiedemann). 



