SYNONYM. 



Laphria fulvicauda. Nobis. Journ. Acad. 

 Nat. Sciences, vol. iii. p. 53. 



DESCRIPTION. 



Body black, with long cinereous hair: head 

 large, transverse ; eyes deep black : thorax varied 

 with black and cinereous, and with short, black 

 hair; two distinct, longitudinal, dorsal, black 

 lines, with a more obvious cinereous band in the 

 middle, which is interrupted by the dorsal lines ; 

 two cinereous obsolete points each side behind: 

 wings blackish: halteres pale at tip: abdomen 

 depressed, above and beneath subglabrous, hairy 

 each side ; the two terminal segments of the ter- 

 gum with a common fulvous spot. 



Length about three-fifths of an inch. 



OBSERVATIONS. 



I obtained it at the settlement of Cote sansDes- 

 sein, on the Missouri river, during a short stay of 

 Major Long's exploring expedition at that place. 



Lower right figure. 



PLATE VI. F 



