110 THOMAS SAY FOUNDATION 



tion, collected many years ago by Prof. C. F. Baker. 



Holotype.— Male, No. 20509, U. S. N. M., Mi- 

 ami, Fla. 



Allotype.— Female, No. 20509, U. S. N. M., Mi- 

 ami, Fla. 



No. 45. Sarcophag^a chsetopygialis Will. 

 Williston, Trans. Ent. Soc. Lond., 1896, 366. 



Williston described the species from nmiierous 

 specimens, some of which he retained in his collection 

 while returning most of them to the Entomological 

 Society in London; the retained material ultimately 

 became a part of the collections of the University of 

 Kansas (four males) and of the American Museum 

 of Natural History (four specimens under this name, 

 of which three are Sarcophaga communis Pk.). As 

 Dr. Williston did not designate any particular tpye, 

 these specimens have the same standing as those in 

 London. I exclude the specimens of communis, and 

 redescribe the other species. 



Male. Front about one-third as wide as one eye 

 (not measured) ; pollen of front and face yellow but 

 not intensely so, inside the lunule blackish; antennas 

 blackish at base, third joint brown, its base red- 

 brown; third joint four times as long as second; arista 

 long-plumose on basal three-fifths; parafacial desti- 

 tute of hairs (even under high power of Zeiss binocu- 

 lar) ; palpi black, smallish; outer vertical absent. 



Mesonotum with black and white stripes; ps dc 

 3 ; stpl 3 ; scutellars rubbed off. 



Abdomen black and silvery, with unusually dis- 

 tinct pattern: at side a silvery band on segments 1 to 

 4, on the upper surface of each two oblique silvery 

 spots, the rest black; legs black, not villous, not very 

 bristly; middle tibia with only one small bristle in 

 front near middle. 



Wing hyaline, first vein with a few setse near the 

 base, third with a short row. 



Hypopygium: both segments black, of moderate 

 size; probably no bristles on first segment; forceps 



