10 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 66 



Anterior spiracles located near the apex of the puparium; each 

 spiracle has six j^ellow lobes well separated; basal portion of the 

 spiracle is dull, dark red. 



Length, 5-6 mm. ; diameter, 1.5-2 mm, 



Natrona, California, July 18, 1885. Reared from Melanoplus de- 

 vastator^ inarginates^ differ eiitialis^ plumheus, and Mvittatus. 



• 9. SARCOPHAGA SUBAENESCENS Aldrich 



Small, dull, yellowish red. Posterior cavity small, round, located 

 centrally on the horizontal axis ; the edge of the cavity flattened and 

 there are no indications of tubercules. Each spiracular plate is 

 shining, deep red with three yellow slits, each on a broad lobe, the 

 middle slit is straight and the other two slits converge toward it at 

 the lower end; spiracular plates separated by a space about three- 

 fourths the width of one plate. Anal oj^ening small, fairly distinct, 

 and located just below the posterior cavity. Anterior spiracles are 

 missing. 



Length, 4.5 mm. ; diameter, 2 mm. 



Somerville, New Jersey, June 23, 1922; R. T. Webber, collector. 

 From spider web. 



10. SARCOPHAGA HUNTERI Hough 



Small, dull yellowish red. Posterior cavity is quite small, ellipti- 

 cal, and located on the horizontal axis; no tubercles visible on the 

 edge of the cavity. Each spiracular plate is sub-shining, dark rod 

 with three distinct lobes; three yellow slits each slightly broader at 

 the base and pointed at the apex ; middle slits almost parallel ; spir- 

 acular plates almost touching. Anal opening quite small, depressed, 

 and located just below the edge of the cavity; no anal tubercle. 

 Anterior spiracles nearly as high as broad; each spiracle has nine 

 small yellow lobes ; basal part of spiracle is deep reddish. 



Length, 5.25 mm. ; diameter, 2 mm. 



Charleston, Missouri, September 28, 1914; G. W. Barber, col- 

 lector; Platte, South Dakota, C. N. Ainslie, collector. Reared from 

 Melanoplus differentialis. M. atlanis, and from codling moth. 



11. SARCOPHAGA ATLANIS Aldrich 



Small sized, dull, yellowish red. Posterior cavity quite small, 

 shallow, located on the horizontal axis ; no tubercles around the edge 

 of the cavity ; last two segments of puparium rather distinct. Each 

 spiracular plate is sub-shining, red with three yellow slits ; the mid- 

 dle slits parallel, spiracular plates separated by a space about three- 

 fourths the width of one plate ; on the inside, near the lower edge of 

 each spiracular plate is a small, Avrinkled area. Anal opening small. 



