ALDRICH AND DARLINGTON. 89 



"This species, coming from Carolina, was given me by M. Bosc 

 under the name Musca Jiaveseens." 



Entire description translated into English except the diagnosis. 

 We are unable to identify the .species with certainty or plausibility 

 from the vague characterization. Perhaps it was really a Scato- 

 phaga, as the redness of the front would indicate. 



A pair of specimens from the U. S. N. M., locality Oswego, New 

 York, came to us under this name, while others, not specifically dis- 

 tinct, from Colorado were labeled Anorodoma mar(jinatu, we tliink 



correct! V. 



H¥:i.On\Z\ Fallen. 



Humeral bristle absent; propleural absent; five dorso-centrals ; 

 three supra-alar; two notopleural ; one presuturai ; scutellar two 

 pairs ; one fr()nto-orl)ital ; one sternopleural. Face with distinctly 

 projecting oral margin ; antennae with somewhat elongated third 

 antennal joint, the arista in most cases more or less plumose. 

 Wings large, in the majority of cases with markings, which usually 

 l)order the cross-veins and the apices of the longitudinal veins. 



In this genus the transverse suture of the thorax runs obliquely 

 forward from its origin at the side, so that the portion behind it is 

 larger than usual ; four of the five sternopleural bristles are behind 

 the suture. 



The species are as a rule rather large, yellow, somewhat elongate 

 forms, easily distinguished by the absence of humeral and propleu- 

 ral bristles, together with the large number of five dorso centrals. 



We have seen all tlie species of the table except the Mexican 



forms and apicaiis ; the descriptions of these, together with those 



of Walker's two supposed species, are i-eproduced at the end of the 



genus. 



TABLE OF SPECIES. 



1. Arista plumose "-• 



Arista bare or merely pubescent T- 



2. Mesopleura bare ^• 



Mesopleura with hairs (>. 



.'). Cheeks more tlian one-third the eye height 4. 



Cheeks less than one-third the eye height 5. 



4. Scutellum pilose loiisipeiiiiis Loew. 



Scntellum with only a very few scattering hairs pliiiiiHla Loew. 



5. Scutellum bare linibala Thomson. 



Scutellum pilose quiiiquepuiielata Say. 



6. Ocellar knob black, face witii narrow silver-white lateral margins (Mexico . 



piinctiilala VauderWulp. 

 Ocellar knob not black, and no silver-white margins of face. 



iieuioriim Meigen. 



TR.\NS. AM. KNT. SOC. XXXIV. (12) MAECH. 1908. 



