16 PROCEEDINGS OF THE NATIONAL MUSEUM vol.66 



Honolulu, Hawaii, March 27, 1917; P. H. Timberlake, collector. 

 Reared from dead grubs ; Timberlake, No. 7629. 



24. SARCOPHAGA BISETOSA Parker 



Small sized, dull, dark red. Posterior cavity small, deep, some- 

 what elliptical, with the lower edge notched in the middle; located 

 centrally on the horizontal axis; tubercles or the edge of the cavity 

 indistinct. Each spiracular plate is subshining. black with three 

 yellowish slits .each on a well-defined ridge; the first slit is slightly, 

 bent, near its base, toward the second; the plate is slightly extended 

 beyond the ridges along the upper and outer edge ; spiracular plates 

 are separated by a very narrow space. Anal opening small, located 

 just below the posterior cavity; there is a small tubercle each side 

 of the anal opening. Anterior spiracles close to the apex; each 

 spiracle has 29 small, yellow lobes; the lower part of the spiracle 

 is deep red. 



Length, 7 mm. ; diameter, 2 mm. 



Rockville, Pennsylvania, April 17, 1922; A. B. Champlain, col- 

 lector. 



25. SARCOPHAGA PLINTHOPYGA Wiedemann 



Large sized, dull, dark red with a faint depression above the pos- 

 terior cavity. Posterior cavity medium to large sized, rounded and 

 located centrally on the horizontal axis; tubercles on edge of cavity 

 fairly well marked. Each spiracular plate is shining reddish black 

 with three yellow slits; middle slit long and straight; first slit is 

 slightly sinuous and the first ridge has a point on the side near the 

 apex; spiracular plates separated by a space equal to about one- 

 third of the width of one plate. Anal opening depressed and some 

 distance below the edge of the cavity; a rounded tubercle on each 

 side of the anal opening. Anterior spiracles are missing in this 

 material. 



In one specimen the spiracular plates are nearly touching. 



Length, 7-9 mm. ; diameter, 2.5-3.75 mm. 



Victoria, Texas, November 1, 1916; J. D. Mitchell, collector; 

 Bishopp, No. 7092. 



26. HELICOBIA HELICIS Townsend 



Small sized, dull, dark red. Posterior cavity large, deep, rounded, 

 located centrally on the horizontal axis; tubercles around the edge 

 indistinct; above the posterior cavity is a depression (seen from 

 lateral view). Each spiracular plate is small, shining, reddish black 

 with three narrow yellow slits ; middle slits about parallel ; spiracular 

 plates separated by a space slightly greater than the width of one 

 plate. Anal opening large, not far below the cavity; no anal 



